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Questions and Answers
What type of specimen testing is preferred for double-V-groove welds to reveal internal defects at the root?
What type of specimen testing is preferred for double-V-groove welds to reveal internal defects at the root?
Which hardness testing method uses a 10mm ball with 3000 kg force?
Which hardness testing method uses a 10mm ball with 3000 kg force?
What is the unit of hardness given by the Vickers hardness test?
What is the unit of hardness given by the Vickers hardness test?
Which hardness scale uses a conical-shaped diamond indenter and a major load of 150 kg?
Which hardness scale uses a conical-shaped diamond indenter and a major load of 150 kg?
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What is the relationship between hardness and ductility?
What is the relationship between hardness and ductility?
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Which hardness testing method uses a conical-shaped diamond indenter and a major load of 150 kg?
Which hardness testing method uses a conical-shaped diamond indenter and a major load of 150 kg?
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What is the relationship between hardness and tensile strength of steel?
What is the relationship between hardness and tensile strength of steel?
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What type of indentation does the Vickers hardness tester use?
What type of indentation does the Vickers hardness tester use?
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What is the unit of hardness given by the Vickers hardness test?
What is the unit of hardness given by the Vickers hardness test?
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Which hardness testing method uses a 10mm ball with 3000 kg force?
Which hardness testing method uses a 10mm ball with 3000 kg force?
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What is the purpose of reviewing welder qualifications?
What is the purpose of reviewing welder qualifications?
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What should be checked during visual inspection after welding?
What should be checked during visual inspection after welding?
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What is the purpose of inspecting joint preparation and fit-up?
What is the purpose of inspecting joint preparation and fit-up?
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What is the significance of identifying the weld size requirements?
What is the significance of identifying the weld size requirements?
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What is the purpose of ensuring approved welding procedures are available?
What is the purpose of ensuring approved welding procedures are available?
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Which method is commonly used to detect subsurface volumetric discontinuities in welds?
Which method is commonly used to detect subsurface volumetric discontinuities in welds?
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What type of radiation is used in radiography for inspecting welds?
What type of radiation is used in radiography for inspecting welds?
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What material is not possible to examine using magnetic particle inspection?
What material is not possible to examine using magnetic particle inspection?
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What is the purpose of establishing a safe zone and posting warning signs during radiography?
What is the purpose of establishing a safe zone and posting warning signs during radiography?
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Which method is most sensitive for locating smaller discontinuities?
Which method is most sensitive for locating smaller discontinuities?
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What is the distinguishing characteristic of chain intermittent fillet welds?
What is the distinguishing characteristic of chain intermittent fillet welds?
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What is the pitch of intermittent fillet welds defined as?
What is the pitch of intermittent fillet welds defined as?
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What is the significance of identifying the arrow side and the other side of a joint in welding symbols?
What is the significance of identifying the arrow side and the other side of a joint in welding symbols?
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What is the purpose of specifying the length and position of fillet welds next to the fillet weld symbol?
What is the purpose of specifying the length and position of fillet welds next to the fillet weld symbol?
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What type of intermittent fillet weld involves double-fillet welds in two lines with the centres of weld segments on each side of the joint being offset in relation to one another?
What type of intermittent fillet weld involves double-fillet welds in two lines with the centres of weld segments on each side of the joint being offset in relation to one another?
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Study Notes
Weld Quality Control and Inspection Methods
- Side-bend specimen testing is preferred for double-V-groove welds to reveal internal defects at the root
- Hardness is the material's resistance to permanent deformation, with a relationship to mechanical properties and tensile strength of steel
- Hardness testing is commonly performed through indentation tests using Brinell, Vickers, and Rockwell methods
- The Brinell hardness tester uses a 10mm ball with 3000 kg force, with limitations in narrow areas such as the heat-affected zone
- The Rockwell hardness tester measures depth of penetration under different loads and indentors, commonly using the C and B scales
- The Vickers hardness tester uses a small indentation and allows for testing specific regions of the weld
- For Vickers testing, the indentation size should be measured and the distance between indentations should be at least 25 times the indentation size
- A high hardness indicates high strength and low ductility, with a relationship to the tensile strength of steel
- The Brinell, Vickers, and Rockwell hardness tests are based on the principle of indentation tests
- The Brinell hardness value is designated by the letters HB, while the Rockwell hardness is denoted by HRx
- The Rockwell C scale uses a conical-shaped diamond indenter and a major load of 150 kg, while the Rockwell B scale uses a 1/16 in steel ball and a major load of 100 kg
- The Vickers hardness test uses a square-based diamond pyramid indenter and the unit of hardness given by the test is known as the Vickers Pyramid Number (HV)
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Description
Test your knowledge of weld quality control and inspection methods with this quiz. Explore topics such as hardness testing, indentation tests, and specific testing methods like Brinell, Vickers, and Rockwell.
