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首页> 美国卫生研究院文献>other >Torsional shear strength of steel joined with high performance aerospace adhesives at cryogenic and elevated temperatures
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Torsional shear strength of steel joined with high performance aerospace adhesives at cryogenic and elevated temperatures

机译：在低温和高温下结合高性能航空航天粘合剂的钢的扭转剪切强度

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摘要

Pure torsional shear tests of joints glued with two different aerospace grade adhesives were performed using a specifically designed and constructed torsional shear test equipment. The developed test equipment allows for measuring of pure torsional shear strength under cryogenic and at elevated temperature conditions. The adhesives Hysol EA 9321 and 3M Scotch-Weld EC-9323-2 B/A were used to join steel torsional shear test specimens. Torsional shear tests were performed from -180°C to 150°C. In addition torsional shear fatigue tests were also performed at various loads and the effect of cryogenic aging (cyclic cooling and warming) on the torsional strength of the joints was investigated. The results showed that both sets of adhesive joints achieved three times higher torsional shear strength at -180°C compared to room temperature.
机译：使用专门设计和制造的扭剪测试设备，对用两种不同的航空级胶粘剂粘合的接头进行了纯扭剪测试。先进的测试设备可在低温和高温条件下测量纯扭剪强度。粘合剂Hysol EA 9321和3M Scotch-Weld EC-9323-2 B / A用于连接钢的扭转剪切试样。扭转剪切试验在-180°C至150°C之间进行。此外，还在各种载荷下进行了扭剪疲劳试验，并研究了低温时效（循环冷却和加热）对接头抗扭强度的影响。结果表明，两组粘合剂接头在-180°C时的扭转剪切强度是室温的三倍。

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