Method and apparatus for testing welds
A structure for permitting the testing of welds is described, comprising: a base plate; a longitudinal member on said base plate; a web having an opening therein, said opening in said web being positioned over said longitudinal member such that said web vertically abuts said base plate and horizontally abuts said longitudinal member; a lap collar having an air hole and covering said web opening and positioned such that an edge of said lap collar overlaps an edge of said opening in said web and said lap collar vertically abuts said base plate and horizontally abuts said longitudinal member; and an air channel formed between welded abutting surfaces of said base plate and said web, and between welded abutting surfaces of said web and said longitudinal member, and between welded abutting surfaces of said lap collar am said base plate, and between welded abutting surfaces of said lap collar and said longitudinal member; said air channel also including an air pocket in fluid communication therewith and formed between said overlapping surfaces of said web and said lap collar when said lip collar is welded to said web continuously around the perimeter of both said lap collar edge and said web opening edge, said air channel being continuous between said abutting surfaces of said lap collar, said web, said longitudinal member, and said base plate and between overlapping surfaces of said lap collar and said web; whereby when said air channel is pressurized through said air hole, defects in said welds can be detected where air leaks from said welds.
- Assignee:
- Newport News Shipbuilding and Dry Dock Co., VA (United States)
- Patent Number(s):
- US 5219115; A
- Application Number:
- PPN: US 7-945843
- OSTI ID:
- 6206584
- Resource Relation:
- Patent File Date: 16 Sep 1992
- Country of Publication:
- United States
- Language:
- English
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