ALLVAR Alloy 30 is unique with a negative thermal expansion coefficient of −30 ppm/°C at room temperature, or a 1-meter rod shrinking by 0.003 mm for every degree Celsius rise.

In a groundbreaking development, NASA has announced a new alloy that could be the key to unlocking ultra-stable space telescopes needed to detect exoplanets and their potential for habitability. This ...

An expansion joint is a part of the bridge that helps absorb thermal expansion or thermal contraction. Basically, when concrete gets hot, it can expand and when it gets cold, it contracts.

Negative thermal expansion (NTE) is fascinating as it involves a material’s volume contraction rather than expansion upon heating. Although NTE lattices typically have highly flexible frameworks ...

Some years ago it was common for air-cooled condensers to develop leaks, resulting in unpredictable shorter service life. By studying the causes of the problem, it’s possible to come up with solutions ...

For example, in train wheelsets, the wheels are commonly joined to the axles via interference fit. 1. Interference fits can be achieved in two ways: via the application of force, or by exploiting ...

For thermal expansion/contraction of a glass, however, the macroscopic strain is hydrostatic. ... for example, thermal-cycling growth in uranium 23 and increased dislocation density in zirconium 24.