Method of testing a honeycomb joining pin against seating failur

Details Method of testing a honeycomb joining pin against seating failur Method of testing a honeycomb joining pin against seating failur

1990-05-16

1991-02-19

Myracle, Jerry W.

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

By loading of specimen

73842, G01N 308

Patent

active

049932683

ABSTRACT:
The test method employed uses a cylindrical solid aluminum pin having a first stem portion and a threaded second portion separated by a middle necked down portion. The test pin threaded portion is inserted into a flowable adhesive such as an epoxy inside a joining pin located in a hole through abutting honeycomb panels and the epoxy is allowed to cure. A force is exerted on the first portion of the test pin until either the test pin separates at the necked down portion or the test pin is dislodged from the joining pin. In the latter case, the test indicates an improper mixture or a poor curing of the adhesive.

REFERENCES:
patent: 4876896 (1989-10-01), Snow et al.

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