Resistance spot welding is used frequently as a successful joining method for
a variety of work commonly in automotive and other manufacturing
processes. Spot weld nugget is generally hidden between two sheets,
causing its inspection difficult and expensive. Undersized nuggets, brittle or
cracked nuggets, and excessive indentation of electrodes reveals the lack of
fusion between the parts that can make the weld sub-standard.
Visual inspection, pry testing and physical teardown with chisel and hammer
method or a combination of them are being used traditionally. However, this
study presents a more effective nondestructive inspection method based
upon an ultrasonic pulse-echo technique. The theory of the technique together with the experimental verification are presented and its advantages over the other destructive and nondestructive
techniques are considered.
| Identifer | oai:union.ndltd.org:METU/oai:etd.lib.metu.edu.tr:http://etd.lib.metu.edu.tr/upload/4/1027382/index.pdf |
| Date | 01 January 2003 |
| Creators | Kocak, Okan Okay |
| Contributors | Ankara, Alpay |
| Publisher | METU |
| Source Sets | Middle East Technical Univ. |
| Language | English |
| Detected Language | English |
| Type | M.S. Thesis |
| Format | text/pdf |
| Rights | To liberate the content for public access |
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