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Žå‘è DEVELOPMENT OF TESTING PROCEDURE FOR MAGNETIC FLUX LEAKAGE BASED METHOD OF CORROSION DETECTION FOR REINFORCEMENT IN POST-TENSIONED CONCRETE STRUCTURES
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•M“ª’˜ŽÒ Artur SAGRADYAN�iKyoto University ŽÐ‰ïŠî”Õ�HŠw�ê�U �\‘¢�HŠw�u�À�@�\‘¢�Þ—¿Šw•ª–ì�j
˜A–¼ŽÒ1 �‚’J“N�i‹ž“s‘åŠwŽÐ‰ïŠî”Õ�HŠw�ê�U�@�\‘¢�HŠw�u�À�@�\‘¢�Þ—¿Šw•ª–ì�j
˜A–¼ŽÒ2 ŽR–{‹MŽm�i‹ž“s‘åŠwŽÐ‰ïŠî”Õ�HŠw�ê�U�@�\‘¢�HŠw�u�À�@�\‘¢�Þ—¿Šw•ª–ì�j
˜A–¼ŽÒ3 ‹{�ì–L�Í�i‹ž“s‘åŠwŽÐ‰ïŠî”Õ�HŠw�ê�U�@�\‘¢�HŠw�u�À�@�\‘¢�Þ—¿Šw•ª–ì�j
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ƒL�[ƒ��[ƒh Magnetic flux leakage�ANon-destructive testing�APost-tensioned concrete�ASignal processing.�ASteel corrosion
Šª 37
�† 1
�擪ƒy�[ƒW 1717
––”öƒy�[ƒW 1722
”N“x 2015
—vŽ| The presented paper discusses the basics of application of magnetic flux leakage method in testing of reinforcement steel bars of post-tensioned concrete structures. Magnetic flux leakage method utilizes magnetic properties of reinforcement steel bars and influence of various defects on their magnetic properties. Currently, magnetic flux leakage method is mainly used to detect ruptures of reinforcement steel bars in concrete. The proposed method of processing of magnetic flux leakage signal allowed to reliably detect presence of corrosion and establish its position on a specimen.
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