Warning: fopen(/home/virtual/kwjs/journal/upload/ip_log/ip_log_2024-05.txt): failed to open stream: Permission denied in /home/virtual/lib/view_data.php on line 88
Warning: fwrite() expects parameter 1 to be resource, boolean given in /home/virtual/lib/view_data.php on line 89
-
1
-
J Weld Join. 2015;33(4):63-67. Published online August 31, 2015.
DOI: https://doi.org/10.5781/JWJ.2015.33.4.63
- Development of New Low Frequency ECT Sensor to Detect Inner Defects(II) - Application to Welding Specimens Included Defects -
-
Jeong-Ung Park*, Mun-Seok Jang**, Guk-Ju Gim***, Beom-Ki Kim***
-
- Corresponding author: Jeong-Ung Park ,Email: jupark@chosun.ac.kr
- Abstract
- Non-destructive techniques are used widely in the metal industry in order to control the quality of materials. Eddy current testing(ECT) is one of the most extensively used non-destructive techniques for inspecting electrically conductive materials at very high speeds that does not require any contact between the test piece and the sensor. The New ECT sensor which can detect inner defects was developed regardless the condition of surface. This sensor is verified to do experiment which measure the loss of induced electromotive force. The loss of induced electromotive force was measured in 5.4% and this low frequency ECT device can detect internal defects at depth 20 mm.
Keywords :Non-destructive techniques, Eddy current testing, Artificial flaws, Low frequency ECT
