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本文叙述了以聚苯乙烯为楔体的聚束斜探头的特性及测试方法。初步实验证明:在70毫米的声程内,探头声束直径小于4毫米,并可测量2毫米人工裂纹。
This article describes the characteristics and test methods of a beamsplitter with polystyrene as a wedge. Preliminary experiments show that the probe beam diameter is less than 4 mm and the 2 mm artificial crack can be measured within the sound path of 70 mm.