摘要
目的确定超声反射测厚中反射波初至时间,提高反射法测量精度。方法运用多波分析技术,通过分析超声厚度检测中横波、直达纵波、反射纵波的不同传输特性,提出了斜率法判别反射波的起跳时间。结果根据斜率不同,在波场图中可以容易地得到反射曲线。结论解决了反射法测厚中反射初至时间确定难的问题,提高了测试精度。
Aim To improve the precision in concrete thickness measurement by judging the first-arriving-time in reflecting waves accurately. Methods Analyze on different characteristics among transverse wave, vertical wave and surface wave and apply, a slope method to judge the first-arriving-time. Results With slopes method, the reflecting curve can be got easily. Conclusion The problem of time judging is resolved, a better precision is got.
出处
《西北大学学报（自然科学版）》
CAS
CSCD
北大核心
2006年第5期734-736,共3页
Journal of Northwest University（Natural Science Edition）
基金
国家西部交通建设科技基金资助项目(200431881222)
关键词
多波
厚度
超声
multi-waves
thickness
uhrasoni
