NEW
Font size
WorksheetsManufacturing Processes
Total questions: 10
Worksheet time: 8mins
1. Residual Stress in materials can NOT be caused by:
Mechanical Deformation
Welding, casting, or quenching
Phase Changes
Uniform heating and cooling
2. ………… is a measure how much strain a material can undergo before fracture.
Plasticity
Toughness
Ductility
Malleability
3. What type of idealized stress–strain curve is presented in the figure below?
elastic, perfectly plastic
elastic, linearly strain hardening
rigid, perfectly plastic
rigid, linearly strain hardening
4. The element representing the maximum in-plane shear stress with the associated average normal stresses is oriented ……. from the element representing the principal stresses.
0°
45°
90°
180°
5. Which one of the following statements is wrong?
In upsetting a workpiece is compressed between two flat dies.
In the forging process, the sample is considered as very wide if (w >> a).
The work done to deform a material is a product of the stress and strain.
Flow stress is defined as the instantaneous value of stress required to continue plastically deforming a material.
6. Which one of the following statements is wrong?
Small-diameter rolls and/or small reductions in thickness tend to work the metal plastically at its surfaces.
Alligatoring occurs in the nose and tail of the slab due to inhomogeneity of the material.
In the rolling process, as friction increases, the neutral point shifts toward the exit.
In the rolling process, a higher reduction percentage shifts the neutral point toward entry.
7. Systematic error …..
occurs due to chance
occurs in every single measurement
measurements of the same thing will vary in unpredictable ways
occurs only when data is recorded or written down incorrectly
8. Which one of the following statement is correct regarding the figure below:
High precision, low accuracy
High precision, high accuracy
Low precision, high accuracy
Low precision, low accuracy
9. We should be able to capture …….. of all measurements (X-values) within the Control Limit range.
68.2%
99.73%
100%
95.45%
10. Which one of the following statements is wrong regarding the weld heat affected zone (HAZ):
Material in this region is heated, but remains below melting temp.
Retains chemical composition of base metal, but microstructures (and properties) are altered.
Material in this region has smaller microstructures compared to the base metal.
Effects are usually negative, and is often the location of weld failures.
