A new criterion for sound weldment
โ Scribed by V Sagar Dwivedi; G Rai
- Publisher
- Elsevier Science
- Year
- 1983
- Weight
- 179 KB
- Volume
- 58
- Category
- Article
- ISSN
- 0025-5416
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๐ SIMILAR VOLUMES
The usual criterion of 10 % or less pressure reflection for lining materials of anechoic chambers is related to the real and imaginary parts of the specific acoustic impedance ratio, allowing some more direct relationship between the acoustic and physical properties of the lining material.
SEVERAL points made in the above paper deserve some clarification. First, it is stated (bottom of p. 473) that a partial decrease in carbon content in the HAZ occurred due to the change in density accompanying the fcc ~ bet transformation. This does not seem to be at all consistent with the laws of
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## Abstract Direct proofs of some planarity criteria are presented.