This paper describes a holographic interferometer which can be used to obtain holograms of bead toe, bead, shoulder and tread cap of multibsad wire tires under the vacuum loaded condition.
本文提出了一种全息干涉仪，它可在真空加载条件下同时将多钢圈轮胎的胎趾、胎圈、胎侧及胎冠拍摄在一张全息图里。
The fatigue life of the surface cracks of the weld toe and the central part of the welding bead are calculated.
又算出了这五种形状角焊缝趾端部和焊肉中央处的表面裂纹疲劳断裂的寿命。
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