Measuring and testing – Simulated environment
Patent
1986-10-14
1988-10-18
Noland, Tom
Measuring and testing
Simulated environment
374 57, 417902, 417DIG1, G01N 3300, G01N 2500, G01N 1700, G01M 1300
Patent
active
047778342
ABSTRACT:
The invention relates to a method for determining a composite material constitutive of moving parts in a hermetically sealed refrigerating compressor, wherein a composite material, of which the initial mechanical and thermal properties fulfull the conditions corresponding to the mechanical and thermal stresses in compressors, is placed during a first determined test period T1 in an environment containing the chemical products that are present in a compressor, at a test temperature equivalent to the maximal operating temperature of a compressor, and wherein at the end of this period, its chemical and mechanical properties are measured, and compared with the initial mechanical or chemical properties, and it is assessed by calculation what such properties would become once the material would have been used in an environment of a compressor during a second period T2, longer than the first test period T1, and wherein this material is thus utilized for producing parts provided the assessed properties satisfy the required properties after an operating period corresponding to the second period T2.
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L'Unite Hermetique
Noland Tom
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