熱衰退試驗 的英文怎麼說
中文拼音 [rèshuāituìshìyàn]
熱衰退試驗
英文
fade test- 衰 : 衰動詞（衰弱） decline; wane
- 退 : 動詞1 （向後移動） retreat; draw back; move back 2 （使向後移動） cause to move back; remove; wit...
- 試 : 名詞（古代占卜用的器具） astrolabe
- 驗 : 動詞1. （察看; 查考） examine; check; test 2. （產生預期的效果） prove effective; produce the expected result
- 衰退 : fail; decline; decay; rust; ruin; downturn; retrogression; retrogradation; recession; rustiness; ...
- 試驗 : trial; experiment; test
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The difference among the elasticity modulus of various microstructures is probably the main reason, which caused the experiment results above. under the same experiment conditions, such as sample shape, size, surface roughness, establishment of testing system, pressure on the probe, and thickness of coupling medium, the variety of relative attenuation coefficient ( or ) in different heat treatment samples is measured and compared by measuring the attenuation obtained from the cylindrical surface of column. the result is as following : for 40cr and 38crmoal, a mt < az mq < a s < a p + f ; for gcrlssimn, a mt < a annea < s < a p + f ; and a increased with the increasing of frequency
在保證試樣形狀、尺寸、表面光潔度、系統參數設置、施加在探頭上的壓力以及耦合層厚度等測試條件一致的情況下，利用棒材圓柱面測衰減系數法，分別測定並比較上述不同熱處理試樣相對衰減系數的變化情況，得到的實驗結果是：對於40cr及38crmoal鋼， _ （低溫回火） （淬火） _ （高溫回火） _ （正火） ；對于gcr15simn鋼， _ （低溫回火） _ （退火） _ （高溫回火） _ （正火） ；且隨著頻率的提高，衰減系數均呈現增加的趨勢。
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