Introduction to Machine Elements Quiz

Machine: those kind of equipment, which consumes or transmits power or energy and its operation principle is mechanical.

General-purpose machine elements can be used in any application, and include items such as gears, bearings, and shafts.

Gears are rotating parts with interlocking teeth that turn against other gears, causing them to turn and transmit rotational force, or torque.

<p>Bearings are used to carry force and allow for reduced friction as they roll freely beneath a moving part.</p> Signup and view all the answers

<p>To consider all external loads affecting the product.</p> Signup and view all the answers

<p>The load as a function of time.</p> Signup and view all the answers

<p>To determine the maximum allowable stresses &amp; endurance limits.</p> Signup and view all the answers

<p>DFMEA (Design Failure Mode and Effect Analysis).</p> Signup and view all the answers

<p>Wear, temperature field effects, non-allowable motions, different substrate, radiation, electrical, optical, various property change, biological degradation, etc.</p> Signup and view all the answers

<p>Usage value decrease, needed refurbishment, maintenance, and fracture.</p> Signup and view all the answers

<p>Calculates the stress state from the load case and compares it to the endurance limit of given elements.</p> Signup and view all the answers

<p>Design for Manufacturing (DFM).</p> Signup and view all the answers

<p>Cast iron, steel, aluminium, bronze, polymer, glass, porcelain, ceramics, wood, paper, etc.</p> Signup and view all the answers

<p>To reduce the disadvantageous effects.</p> Signup and view all the answers

<p>Polymers have lower density and operation temperature compared to metals.</p> Signup and view all the answers

<p>To create models for different time-dependent load cases.</p> Signup and view all the answers

<ol> <li>joints, 2) plumbing elements, 3) springs and spring systems</li> </ol> Signup and view all the answers

<p>To find solutions at given boundary conditions while optimizing from various aspects like material, structure, manufacturing, and product-human interface</p> Signup and view all the answers

<p>The Pahl-Beitz design process</p> Signup and view all the answers

<p>Scientific and mathematical principles</p> Signup and view all the answers

<p>Load case, stress, and threshold values</p> Signup and view all the answers

<p>To meet customer requirements efficiently and effectively</p> Signup and view all the answers

<p>The number of products and manufacturing processes</p> Signup and view all the answers

<p>Additional steps in processing and inspection</p> Signup and view all the answers

<p>Manpower, methodology, teamwork, and ethics</p> Signup and view all the answers

<p>Collaboration between marketing, design, manufacturing, preparation, purchasing, supplier development, management, and customer methodology</p> Signup and view all the answers

<p>Determining the load case, the state of stress and stress limits, and the geometrical structure and dimensions</p> Signup and view all the answers

<p>General-purpose machine elements can be used in any application and include items such as gears, bearings, and shafts.</p> Signup and view all the answers

<p>A machine element is an individual part of a machine that moves and impacts other parts to make the machine work. Although it may consist of smaller structural parts, the entire setup that performs the function is considered the element.</p> Signup and view all the answers

<p>A machine operates by consuming or transmitting power or energy through mechanical motion. It is considered a machine when its operation principle is mechanical.</p> Signup and view all the answers

<p>Gears are rotating parts with interlocking teeth that turn against other gears, causing them to turn and transmit rotational force, or torque.</p> Signup and view all the answers

<ol> <li>joints, 2) plumbing elements, and 3) springs and spring systems</li> </ol> Signup and view all the answers

<p>To find solutions at given boundary conditions, while optimizing from various aspects like material, structure, manufacturing, and product-human interface</p> Signup and view all the answers

<p>The Pahl-Beitz design process</p> Signup and view all the answers

<p>The load case, identify the stress, and determine threshold values</p> Signup and view all the answers

<p>Manufacturing processes and the number of products</p> Signup and view all the answers

<p>To determine the load conditions under which the product will operate</p> Signup and view all the answers

<p>Manpower, methodology, teamwork, and ethics</p> Signup and view all the answers

<p>Polymers generally have lower strength and stiffness compared to metals</p> Signup and view all the answers

<p>Gears are used to transmit motion and power between shafts</p> Signup and view all the answers

<p>To develop solutions for society's problems focusing on safety, efficiency, and cost-effectiveness</p> Signup and view all the answers

<p>To meet customer requirements efficiently and effectively</p> Signup and view all the answers

<p>Efficiency and cost-effectiveness</p> Signup and view all the answers

<p>The load, as a function of time</p> Signup and view all the answers

<p>To determine the maximum allowable stresses &amp; endurance limits of structures &amp; assemblies</p> Signup and view all the answers

<p>Wear, temperature field effects, non-allowable motions, different substrate, radiation, electrical, optical, various property change, biological degradation</p> Signup and view all the answers

<p>Usage value decrease, needed refurbishment, maintenance, fracture</p> Signup and view all the answers

<p>Calculates the stress state from the load case, compares it to endurance limit of given elements, and determines whether the construction is good or wrong</p> Signup and view all the answers

<p>Design for manufacturing (DFM)</p> Signup and view all the answers

<p>Simplifying, optimizing, and refining the product design</p> Signup and view all the answers

<p>Cast iron, steel, aluminium, bronze, polymer, glass, porcelain, ceramics, wood, paper</p> Signup and view all the answers

<p>Mechanical, thermal, electrical, optical, tribological, and other specific properties</p> Signup and view all the answers

<p>Polymers have lower density and operating temperature compared to metals</p> Signup and view all the answers

<p>Load-modell creation, determining maximum allowable stresses &amp; endurance limits, stress analysis</p> Signup and view all the answers

<p>To consider all the external loads which have any effect on the product</p> Signup and view all the answers

<p>Bearings are used to carry force and reduce friction as they roll freely beneath a moving part.</p> Signup and view all the answers

<p>Machine elements are individual parts of a machine that move and impact other parts to make the machine work. An example is gears, which transmit rotational force or torque.</p> Signup and view all the answers

<p>General-purpose machine elements can be used in any application, and include items such as gears, bearings, and shafts. They are important because they provide versatility and standardization in machine design.</p> Signup and view all the answers

<p>A machine consumes or transmits power or energy through mechanical motion. It is considered a machine because its operation principle is based on mechanical energy transfer.</p> Signup and view all the answers

<p>Joints, plumbing elements, springs and spring systems</p> Signup and view all the answers

<p>To find solutions at given boundary conditions while optimizing various aspects like material, structure, manufacturing, and product-human interface</p> Signup and view all the answers

<p>The Pahl-Beitz design process</p> Signup and view all the answers

<p>Load case, stress, and threshold values</p> Signup and view all the answers

<p>Manpower, methodology, teamwork, and ethics</p> Signup and view all the answers

<p>Customer requirements efficiently and effectively</p> Signup and view all the answers

<p>Manufacturing processes and the number of products</p> Signup and view all the answers

<p>Metals, polymers, and others</p> Signup and view all the answers

<p>To develop solutions for various problems faced by society, focusing on safety, efficiency, and cost-effectiveness</p> Signup and view all the answers

<p>Safety, efficiency, and cost-effectiveness</p> Signup and view all the answers

<p>To meet customer requirements efficiently and effectively</p> Signup and view all the answers

<p>To transfer motion and force</p> Signup and view all the answers

<p>To determine the load as a function of time, which is the most important factor in designing products for a certain period of time.</p> Signup and view all the answers

<p>Wear on loaded mating surfaces, temperature field effects, non-allowable motions, different substrate, radiation, electrical and optical effects, and biological degradation.</p> Signup and view all the answers

<p>Usage value decrease, needed refurbishment, maintenance, and the most dangerous method, the fracture.</p> Signup and view all the answers

<p>The engineer designs the structure with dimensions, calculates the stress state from the load case, and compares it to the endurance limit of given elements to determine the construction's suitability.</p> Signup and view all the answers

<p>Design for Manufacturing (DFM)</p> Signup and view all the answers

<p>Cast iron, steel, aluminium, bronze, polymer, glass, porcelain, ceramics, wood, and paper.</p> Signup and view all the answers

<p>To explore advanced material properties and reduce the disadvantageous effects.</p> Signup and view all the answers

<p>Materials, manufacturing complexity, and the chosen manufacturing method.</p> Signup and view all the answers

<p>The load, as a function of time.</p> Signup and view all the answers

<p>Gears transmit motion and power between rotating shafts. For example, they are used in reading lamps for clamping and in intermittent operation of an impeller.</p> Signup and view all the answers

<p>Polymers have lower density and different operating temperatures compared to metals.</p> Signup and view all the answers

<p>To determine the maximum allowable stresses and endurance limits of structures and assemblies, and to consider all possible effects and failure modes.</p> Signup and view all the answers

<p>A machine element is an individual part of a machine that moves and impacts other parts to make the machine work. Although it may consist of smaller structural parts, the entire setup that performs the function is considered the element.</p> Signup and view all the answers

<p>General-purpose machine elements can be used in any application, and include items such as gears, bearings, and shafts. They are important because they are versatile and can be applied in various types of machines and systems.</p> Signup and view all the answers

<p>A machine is defined as those kinds of equipment which consume or transmit power or energy and operate on a mechanical principle. If there is no mechanical motion, then it is not considered a machine.</p> Signup and view all the answers

<p>Gears are rotating parts with interlocking teeth that turn against other gears, causing them to turn and transmit rotational force or torque. A typical example is the use of gears in a car's transmission system to change the speed and torque of the wheels.</p> Signup and view all the answers

<p>joints, plumbing elements, springs and spring systems</p> Signup and view all the answers

<p>To find solutions at given boundary conditions while optimizing from various aspects like material, structure, manufacturing, and product-human interface</p> Signup and view all the answers

<p>The Pahl-Beitz design process</p> Signup and view all the answers

<p>To meet customer requirements efficiently and effectively</p> Signup and view all the answers

<p>Manufacturing processes and the number of products</p> Signup and view all the answers

<p>Various materials including metals, polymers, etc.</p> Signup and view all the answers

<p>Additional steps in processing and inspection or render a part impractical to produce economically</p> Signup and view all the answers

<p>Gears are used to transmit motion and power between rotating shafts. They allow changes in torque, speed, and direction of power transmission.</p> Signup and view all the answers

<p>They are important for their versatility and widespread applicability in various machine designs.</p> Signup and view all the answers

<p>Inadequate material selection, design flaws, manufacturing defects, and improper usage</p> Signup and view all the answers

<p>To determine the load case, identify the stress, and determine threshold values during the development process</p> Signup and view all the answers

<p>Polymers generally have lower density and are less stiff than metals. They also often have lower strength and higher ductility.</p> Signup and view all the answers

<p>Wedge-locking washers</p> Signup and view all the answers

<p>Microcapsule compounds containing adhesive</p> Signup and view all the answers

<p>Slackening</p> Signup and view all the answers

<p>The flow of flux on compressed and sheared surfaces</p> Signup and view all the answers

<p>Riveting</p> Signup and view all the answers

<p>Tension and shearing</p> Signup and view all the answers

<p>The force on the rivet</p> Signup and view all the answers

<p>Tension</p> Signup and view all the answers

<p>Microcapsule compounds containing adhesive</p> Signup and view all the answers

<p>The flow of flux</p> Signup and view all the answers

<p>Chuck, fejezõ szerszám, and die tools</p> Signup and view all the answers

<p>Its displacement</p> Signup and view all the answers

<p>Wear on loaded mating surfaces, temperature field effects, non-allowable motions, different substrates, and radiation</p> Signup and view all the answers

<p>Models with varying load amplitude and frequency, and those with constant load</p> Signup and view all the answers

<p>To calculate the minimum and maximum tension force required for achieving the desired torque with a certain deviation</p> Signup and view all the answers

<p>The applied load and the joint's geometric properties</p> Signup and view all the answers

<p>To select the appropriate material based on the requirements list</p> Signup and view all the answers

<p>Lower density, lower operation temperature, and different frictional properties</p> Signup and view all the answers

<p>To calculate the structure's stress state and compare it to its endurance limit to determine safety</p> Signup and view all the answers

<p>To enable the design of products for a certain period by considering the load as a function of time</p> Signup and view all the answers

<p>Design for Manufacturing (DFM)</p> Signup and view all the answers

<p>To describe more reality effects, such as cumulative failure theories, operational solidness, and elasto-plastic boundary conditions</p> Signup and view all the answers

<p>Interfering ring on a shaft, reading lamp, bolt joints, impeller operation, and rollers</p> Signup and view all the answers

<p>Decreased usage value, refurbishment, maintenance, or fracture</p> Signup and view all the answers

<p>Tension and shear connections</p> Signup and view all the answers

<p>Using Hooke's law, with material constants such as Young's modulus and Poisson's ratio</p> Signup and view all the answers

<p>Before tightening, the components are in their normal state. After tightening, the bolt is elongated and the clamped members are compressed.</p> Signup and view all the answers

<p>By the elongation under load and the cross-sectional areas of its parts</p> Signup and view all the answers

<p>The simplified pressure-cone method</p> Signup and view all the answers

<p>External, internal, and intermediate force loosening</p> Signup and view all the answers

<p>When the loosening force acts below the head of the bolt, and the springs are in parallel in the model.</p> Signup and view all the answers

<p>By the force required to loosen the bolt (Fkrit) and the tension in the springs (Fv), and can be increased by using a stiffer bolt or softer members.</p> Signup and view all the answers

<p>It includes force loosening (external, internal, intermediate), energy type loosening, and diversion loosening.</p> Signup and view all the answers

<p>It is formed by the applied preload force (Fv) creating elongation (strain) in the bolt (λ1) and compression in the members (λ2).</p> Signup and view all the answers

<p>Bolt, clamped components, and springs</p> Signup and view all the answers

<p>Based on the simplified pressure-cone method, which predicts the pressure distribution throughout the thickness of the grip.</p> Signup and view all the answers

<p>By increasing their dimensions</p> Signup and view all the answers

<p>Heat expansion, relaxation, creep, surface smoothening, and corrosion</p> Signup and view all the answers

<p>Non-rotational loosening (Internal force slackening)</p> Signup and view all the answers

<p>Clear internal loosening, independent from the stiffness of the members</p> Signup and view all the answers

<p>Non-rotational loosening (Intermediate force slackening)</p> Signup and view all the answers

<p>Friction locking, mechanical locking, and permanent locking</p> Signup and view all the answers

<p>It generates two friction surfaces between nuts and fasteners</p> Signup and view all the answers

<p>They are generally self-locking by friction</p> Signup and view all the answers

<p>Radial serrations</p> Signup and view all the answers

<p>By bending and sticking to the side of the nut and connector</p> Signup and view all the answers

<p>Continuous elastic force</p> Signup and view all the answers

<p>To protect against nut slackening, with form closing, force closing, and material 'closing' solutions</p> Signup and view all the answers

<p>Big strength, indispensable for special manufacturing, maintenance for cracked &amp; weared elements, productive, easily automated with robots, advantageous shapes can be designed from deflection &amp; strength point of view</p> Signup and view all the answers

<p>Limited to certain materials, warpage due to high local heat concentration, need for after-welding process, lack of damping effect, cost-effectiveness of non-destructive control for quality welding</p> Signup and view all the answers

<p>A welding joint is a point or edge where two or more pieces of metal or plastic are joined together.</p> Signup and view all the answers

<p>A welding joint is a point or edge where two or more pieces of metal or plastic are joined together.</p> Signup and view all the answers

<p>Factors like the glue material, kind of substrates, operation conditions, and geometry of the glueing gap.</p> Signup and view all the answers

<p>Terms like 'Anyaggal záró kötések' and 'Gépelemek'.</p> Signup and view all the answers

<p>As doubles, with the rib not having an apex point.</p> Signup and view all the answers

<p>Long preparation time, requirement for clean surfaces, and sensitivity to high temperatures and aging.</p> Signup and view all the answers

<p>Shearing forces instead of tension forces on the root side.</p> Signup and view all the answers

<p>Glued joints.</p> Signup and view all the answers

<p>Adhesion and cohesion.</p> Signup and view all the answers

<p>To compare it to the ultimate stress for checking the weld's correctness.</p> Signup and view all the answers

<p>Adhesive pastas that harden at high temperatures, used for creating low, medium, and high strength joints.</p> Signup and view all the answers

<p>Incorrect skew connections.</p> Signup and view all the answers

<p>Determining dimensions of the welded joint, stresses in the weld, and stress components in the normal and transverse plane.</p> Signup and view all the answers

<p>Due to aging or rigid fracture.</p> Signup and view all the answers

<p>Butt, Lap, Strap, Corner</p> Signup and view all the answers

<p>Strong, reliable, cheap; requires rework for sheet metals</p> Signup and view all the answers

<p>Poor quality, double weld metal, more material, additional bending</p> Signup and view all the answers

<p>Resembles riveted joint, big load capacity, quadrant weld metal, more material, no additional bending</p> Signup and view all the answers

<p>Various types with different load capacities and costs</p> Signup and view all the answers

<p>Choose high weldable materials, use minimum number of welds, avoid shaping parts based on casting or forging, select standard components</p> Signup and view all the answers

<p>Far from stress peak, incorrect placement can lead to joint failure</p> Signup and view all the answers

<p>Joint line crossings</p> Signup and view all the answers

<p>At least 5v away from the cold section</p> Signup and view all the answers

<p>MMA, MIG, TIG, FCAW, SAW, SMAW, Resistance, Forge, Friction, Induction</p> Signup and view all the answers

<p>Butt, Lap, Strap, Corner</p> Signup and view all the answers

<p>Relatively far from the stress peak</p> Signup and view all the answers

<p>By using one-way lap joints, short joints, soft glueing material, rigid substrates, and varying cross sections.</p> Signup and view all the answers

<p>Advantages include bonding different metals, low soldering temperature, good sealing ability, and good electrical conduction. Disadvantages include relatively small load carrying capacity and expensive surface preparation.</p> Signup and view all the answers

<p>Optimal cases have shearing state of stress.</p> Signup and view all the answers

<p>Taper cross sections, laps and scarf joints, glueing belt ends, and taper substrate endings.</p> Signup and view all the answers

<p>Design for shearing, ensure homogenous load distribution, avoid impact and peeling effects, increase glueing surface, avoid additional load cases.</p> Signup and view all the answers

<p>Soldering.</p> Signup and view all the answers

<p>One-way joints can carry approximately twice the load of reverse-way joints.</p> Signup and view all the answers

<p>Vessel bases, pipe attachment to sheet metal, beam attachment to sheet metal, shaft attachments, and sheet metal to sheet metal.</p> Signup and view all the answers

<p>The load case influences whether both sheets are tensioned in one-way joints or the above sheet is compressed and the below sheet is tensioned in reverse-way joints.</p> Signup and view all the answers

<p>Machinery, plumbing, and electronics applications.</p> Signup and view all the answers

<p>Correct solutions include ensuring undisturbed joint topology, while incorrect solutions involve disturbed joint topology.</p> Signup and view all the answers

<p>Eq. 𝐹0 𝐴10𝐸1 = 𝐹0 𝐴20𝐸2</p> Signup and view all the answers

<p>Big strength, indispensable for special manufacturing, maintenance for cracked &amp; weared elements, productive, can be easily automated with robots, advantageous shapes can be designed from deflection &amp; strength point of view</p> Signup and view all the answers

<p>Limited to certain materials, warpage due to high local heat concentration, need for after-welding process, lack of damping effect, non-destructive control of the joint is cost effective only in quality welding</p> Signup and view all the answers

<p>A point or edge where two or more pieces of metal or plastic are joined together with the same materials by welding according to a particular geometry</p> Signup and view all the answers

<p>To ensure quality welding, including non-destructive control of the joint and the cost-effective approach to maintaining quality</p> Signup and view all the answers

<p>Advantages of glued joints include no heat affected zone, small amount of space and weight, sealing and corrosion resistance, damping effect, and no pre-drilling.</p> Signup and view all the answers

<p>Disadvantages of glued joints include long preparation time, requirement for preparation of surfaces, potential need for pressing machines and cleaning machines, sensitivity to high temperatures, ageing, and harmful gases during processing.</p> Signup and view all the answers

<p>The physical effect bonding involves pressure-sensitive adhesives, which are 'sticky' due to their viscoelastic properties.</p> Signup and view all the answers

<p>Glued joints strength depends on glue material, kind of substrates, operation conditions, geometry of glueing gap, and load case.</p> Signup and view all the answers

<p>At corner joints, skew connection should be avoided.</p> Signup and view all the answers

<p>Corner joints should be welded as double, concave at dynamic loads.</p> Signup and view all the answers

<p>Avoid welded joints at corners or bending curves due to aging or rigid fracture.</p> Signup and view all the answers

<p>Calculation for static loads includes: dimensions of the welded joint, calculation of stresses in the weld, determining the stress components in the normal and transverse plane, and resultant stress calculation.</p> Signup and view all the answers

<p>The resultant stress should be checked against the ultimate stress, dependent on yield stress, gain factor, and safety factor.</p> Signup and view all the answers

<p>Chemical effect bonding involves attractive forces between materials, such as adsorption, covalent bonding, or van der Waals forces.</p> Signup and view all the answers

<p>Weld nomenclature discussed in the presentation.</p> Signup and view all the answers

<p>Weld metal (bead) and HAZ</p> Signup and view all the answers

<p>Melted and re-solidified, contains filler material, different chemical composition, improved properties</p> Signup and view all the answers

<p>Surrounding base metal, not melted, same chemical composition, cannot improve properties</p> Signup and view all the answers

<p>Solid or fusion welding, narrower HAZ in fusion welding, wider HAZ in solid state welding</p> Signup and view all the answers

<p>Butt, Lap, Strap, Corner</p> Signup and view all the answers

<p>Avoid joints near stress peaks, avoid welding lines crossings, weld joints at least 5v away from cold sections</p> Signup and view all the answers

<p>Use high weldability material, minimize number of welds, avoid shaping based on casting or forging, select proper weld location and sequence</p> Signup and view all the answers

<p>MMA, MIG, TIG, FCAW, SAW, SMAW, Resistance, Forge, Friction, Induction welding</p> Signup and view all the answers

<p>Butt (big strength, rework needed), Lap (double weld metal, more material, less quality), Strap (big load capacity, more material), Corner (best, least material, biggest load capacity, additional rework)</p> Signup and view all the answers

<p>Double weld metal, more material, less quality</p> Signup and view all the answers

<p>Best, least material, biggest load capacity, additional rework</p> Signup and view all the answers

<p>Big load capacity, more material</p> Signup and view all the answers

<p>One-way lap joints, short joints, soft glueing materials, rigid substrates, varying cross sections</p> Signup and view all the answers

<p>Advantages: ability to bond different metals, low soldering temperature, good sealing ability, good electrical conductivity. Disadvantages: relatively small load carrying capacity, expensive surface preparation, limited heat resistance</p> Signup and view all the answers

<p>Vessel bases, pipe attachment to sheet metal, beam attachment to sheet metal, shaft attachments</p> Signup and view all the answers

<p>One-way and reverse-way types</p> Signup and view all the answers

<p>To reduce stress congestion and improve the structure by reinforcing it with material removal</p> Signup and view all the answers

<p>To ensure proper joint function and avoid potential problems</p> Signup and view all the answers

<p>The molten solder rising due to capillary force into the cracks between the parts being joined</p> Signup and view all the answers

<p>Relatively small</p> Signup and view all the answers

<p>To join two metal objects together</p> Signup and view all the answers

<p>Machinery, plumbing, and electronics applications</p> Signup and view all the answers

<p>Homogeneous load distribution, avoiding impact and peeling effects, increasing glueing surface, avoiding additional load cases</p> Signup and view all the answers

<p>Significant stress peaks at the edge of the joint</p> Signup and view all the answers