Which units are used to express shear strain? Select all that apply. Select answer from the options below � � μrad in . lb psi � � μin . / in .
Answer
Which Units Are Used to Express Shear Strain?
Shear strain is a measure of angular deformation. It is typically dimensionless, but it can be expressed using angular units like radians or as a ratio of two lengths.
✅ μrad (microradians)
Correct. Shear strain can be represented in radians or microradians because it quantifies angular deformation.
Correct. Shear strain can be represented in radians or microradians because it quantifies angular deformation.
❌ in · lb
Incorrect. This unit represents torque or moment, not strain.
Incorrect. This unit represents torque or moment, not strain.
❌ psi
Incorrect. psi (pounds per square inch) is a unit of pressure or stress, not strain.
Incorrect. psi (pounds per square inch) is a unit of pressure or stress, not strain.
✅ μin. / in.
Correct. This is a dimensionless ratio of deformation to original length, which is valid for both linear and shear strain.
Correct. This is a dimensionless ratio of deformation to original length, which is valid for both linear and shear strain.
❌ ° (degrees)
Incorrect (in standard scientific use). Although degrees are used informally, shear strain is typically measured in radians for consistency in calculations.
Incorrect (in standard scientific use). Although degrees are used informally, shear strain is typically measured in radians for consistency in calculations.
✅ Final Correct Units:
- μrad
- μin./in.
These units correctly describe angular deformation or a ratio of lengths, which align with the concept of shear strain in engineering and physics.