The phrase "at a test temperature" is correct and usable in written English.
It can be used in scientific or technical contexts when referring to a specific temperature at which a test or experiment is conducted.
Example: "The material was evaluated at a test temperature of 100 degrees Celsius to determine its thermal properties."
Alternatives: "under test conditions" or "at a specified temperature".
In the case of a material which has a flash point above 60°CC (140 °F) and below 93°CC (200 °F), if sustained combustion interpreted in accordance with paragraph 6. of this appendix is not found at a test temperature of 5 °C (9 °F) above its flash point, repeat the complete procedure with new test portions, but at a test temperature of 20 °C (36 °F) above its flash point.
At a test temperature of 400°C transverse crack growth is less severe and there is no ligament of premature ductile shear.
The crack growth rate at a test temperature of 450°C, in vacuum, is approximately 4×10−7 mm/cycle in the constant ΔKnom.
This statistical model satisfactorily describes the failure probability distribution of 42 precracked specimens fractured at various loads at a test temperature of − 100°C.
The σF values of steels can be simply measured by the Griffiths Owen's notched specimens loaded in four-point bending or three-point bending at a test temperature and a loading rate.
The behaviour of this material at a test temperature of 400°C, when the residual stress will be reduced, indicates the importance of such residual stresses because now transverse crack growth occurs less readily.
The shear strength of the joints kept being above 139 MPa at a testing temperature below 500 °C.
For the last condition, an exceptionally high elongation of ∼1780% was achieved at a testing temperature of 473 K.
The grain size following HPT is ∼220 nm, and tensile tests show that the material is superplastic at a testing temperature of 573 K.
For example, at a testing temperature of 20°C, the membrane had an oxygen permeability of 233.3 Barrers and an O2/N2 selectivity of 3.52.
However, at a 30°C test temperature, a higher proportion of 30°C-acclimated moths were active and thus, showed locomotor performance, than cold-acclimated moths.
