| 摘要 |
A tubular piece part (10) is tested to determine the rupture strength of the part when subject to lateral expansion (F) with respect to a bore (11) of the part. In one example, a tubular segmented collet (21) is placed in the bore of the part, and a tapered pin (23) is forced a predetermined distance into the collet (X) so as to expand the collet and part radially outward by a predetermined amount. The peak force required to so expand the collet is measured (57) so as to provide an indication of the rupture strength of the part, and particularly of the weld strength of a molded plastic tube having a radial weld line (W). In particular, this method provides an indication of the likelihood that the part will fail prematurely in the field, after subsequent assembly of the part with an insert member (17) that is force fit into the bore.
|
