What will be the effect on stress due to temperature change? 

Concept:

Effect on stress due to temperatures change:

• If the temperature changes (increases or decreases) of any body/specimen (made up of material and have a thermal coefficient), so the thermal stresses developed in the body but when the body is free to expand or contract (shrink) no thermal stress developed.
• If the body temperature rises, the body elongates. For example, the length of the rail increases in summer.
• If the body temperature decreases, the body shrinks.

 Additional Information

• When the temperature rises, there is a slight increase in the length, width, overall area, and volume of the specimen, which is known as thermal expansion. Thermal expansion occurs due to an increase in atomic vibrations with the magnitude of expansion depending on the specific metal.
• Thermal expansion occurs due to an increase in atomic vibrations with the magnitude of expansion depending on the specific properties of the specimen.
• Thermal expansion is an important factor to consider when choosing the right metal for a project as it can ultimately affect how effective or ineffective a structure is.