【摘要】 超声B扫描成象检测中,由于超声多次反射的影响经常出现伪象,导致检测结果不准确。在分析多次回波形成机理的基础上,阐述了B超伪象剔除原理,研制了实施装置。实验结果表明,该方法不仅伪象剔除效果好,而且成象效率高.还具有较强的去噪作用。更多还原

【Abstract】 In ultrasonic B-scan imaging testing, pseudo-images which lead to inaccurate results can often ap-pear due to the influence of ultrasonic multiple reflections. B-scan pseudo-image eliminating principle is explained on the basis of analyzing multiecho mechanism, and the performance system has been developed. Experimental re-sults show that the method is effective in pseudo-image eliminating, imaging and noise suppressing.更多还原