Final Examination IDE401 Industrial Materials and Processes 2024-2025 PDF

Colegio de San Juan de Letran Intramuros, Manila College of Engineering and Information Technology Industrial Engineering Program FINAL EXAMINATION...

Colegio de San Juan de Letran Intramuros, Manila College of Engineering and Information Technology Industrial Engineering Program FINAL EXAMINATION IDE401 – Industrial Materials and Processes 1st Semester, AY 2024 - 2025 Inst. Eunice Y. Gayoma, CIE Score: ____________ Name: _______________________________________ Section: ____________ Student No.: _______________________________________ Date: ____________ GENERAL DIRECTIONS / INSTRUCTIONS: ▪ Strictly no erasures. Write legibly. Use a black pen only. Place your bag in a designated area. LEARNING OUTCOMES: Students will demonstrate an understanding of non-metallic materials, including polymers and composite materials, and apply material selection principles to address engineering and design challenges effectively. I. TRUE OR FALSE (1 Point Each) Write T if the statement is true. Otherwise, write F. Write your answer in the blank space provided. 1. Polymer is a compound consisting of long-chain molecules, each molecule comprising repeating units connected. 2. The two kinds of polymers are synthetic and natural. 3. Plastics can be formed by molding into intricate part geometries, usually with no further processing required. They are very compatible with net shape processing. 4. Addition polymerization is also known as chain polymerization. 5. In step polymerization, two reacting monomers are brought together to form a new molecule of the desired compound. 6. The degree of polymerization affects the properties of the polymer: higher DP increases mechanical strength but also increases viscosity in the fluid state, which makes processing more difficult. 7. An example is the copolymer synthesized from ethylene and propylene produce a copolymer with elastomeric properties. 8. Thermoplastic Polymers are solid materials at room temperature, but they become viscous liquids when heated to temperatures of only a few hundred degrees. This characteristic allows them to be easily and economically shaped into products. 9. Elastomers are polymers that exhibit extreme elastic extensibility when subjected to relatively low mechanical stress. 10. In Injection Molding the polymer is melted in the chamber and then the molten polymer is forced under pressure into the die. Page 1 of 4  Colegio de San Juan de Letran Intramuros, Manila College of Engineering and Information Technology Industrial Engineering Program 11. An extruder is a device that uses large screws and heating coils to melt a polymer, compress it and force it into a mold. 12. Thermosetting Polymers are also called Thermosets. 13. Common Thermoplastic polymers include polyethylene, polyvinylchloride, polypropylene, polystyrene, and nylon. 14. Thermosetting plastics (TS) and elastomers (E) are cross-linked polymers. 15. The two methods of polymerization are addition polymerization and step polymerization. II. IDENTIFICATION (1 Point Each) Write your answer in the blank space provided. Do not abbreviate your answer. 1. Is a material system composed of two or more physically distinct phases whose combination produces aggregate properties that are different from those of its constituents. 2. Can be made of metal, polymer, or ceramic. It is vital for the satisfactory performance of the structure. 3. non-recyclable, usually in liquid form 4. PMC stands for 5. The most widely used resin materials and are used in many applications from aerospace to sporting goods. 6. This resin is classified as thermoplastic polyimides and thermosetting polyimides. 7. Used for making intake manifolds, housing, gears, bearings, bushing, sprockets, etc. Glass filled and Carbon filled nylons. 8. Largest class of synthetic polymers made and used today. 9. One of the most popular commercial polymers. It has very good resistance to many chemicals and has good mechanical strength. It is widely used to make textile fibers, films, and containers 10. MMC stands for 11. CMC stands for 12. Are materials in which one or more distinct ceramic phases are intentionally added to another to enhance some property. Page 2 of 4  Colegio de San Juan de Letran Intramuros, Manila College of Engineering and Information Technology Industrial Engineering Program 13. A phenomenon known as _______ leads to higher fracture toughness due to additional stress required for further propagation of the crack. 14. Recyclable, solid form therefore need to apply high temperature. 15. First method in reinforcing phase of plastic. III. MULTIPLE CHOICE (1 Point Each) Encircle the correct answer. 1. The designer is concerned primarily with the functions that the product is to fulfill. a. Conceptual b. Functional c. Production 2. A workable design is developed, including a detailed plan for manufacturing: Geometric features, dimensions, and materials. a. Conceptual b. Functional c. Production 3. We look to full production and determine if the proposed solution is compatible with production speeds and quantities. a. Conceptual b. Functional c. Production 4. Structured steps used to convert inputs into outputs. a. Supplier b. Input c. Process 5. Products or services resulting from the process. a. Supplier b. Input c. Output 6. Recipient of the output. a. Supplier b. Input c. Customer 7. The provider of inputs into a process. a. Supplier b. Input c. Customer Page 3 of 4  Colegio de San Juan de Letran Intramuros, Manila College of Engineering and Information Technology Industrial Engineering Program 8. Safest and most comprehensive approach. a. Case History Method b. Modification of existing product c. Development of New Product 9. It begins with the evaluation of the current product and its present method of manufacture. a. Case History Method b. Modification of existing product c. Development of New Product 10. Begin by evaluating what has been done in the past (engineering material and method of manufacture) or what a competitor is currently doing. a. Case History Method b. Modification of existing product c. Development of New Product IV. Fill in the Blanks. (2 Points Each) Put the Procedure in manufacturing the Chocolate Bar using SIPOC method. SUPPLIER INPUT PROCESS OUTPUT CUSTOMER -End- Prepared by: Checked by Approved by: Inst. Eunice Y. Gayoma, Asst. Prof. Katrina L. Lee Assoc. Prof. Jacqueline D. Reynoso, PhD CIE Faculty Chairperson Dean Name: _______________________________________ Section: ____________ Student No.: _______________________________________ Date: ____________ Page 4 of 4