Test method for interface bonding strength of solid rocket motor chamber—Part 1: Unstick test for rectangular specimen
1 Scope
This part specifies the specimen preparation, test procedure, and test result processing for testing rectangular specimen combination bonding strength of the chamber case, insulation or stress release boot, liner, and propellant of solid rocket motor (hereinafter referred to as motor).
This part is applicable to testing the rectangular specimen combination bonding strength of the insulation or stress release boot, liner, and propellant in the chamber of the castable composite solid propellant motor. Motors without the stress release boot may also refer to this part.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this part. For dated references, subsequent amendments (excluding corrections) to, or revisions of, any of these publications do not apply to this part. However, parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document is applicable to this part.
QJ 916-1985 Tensile test method for insulation and liner materials in solid rocket motor chamber
3 Test principle
The specimen is tested as follows: bond the insulation, coat the liner, and cast the propellant between two parallel steel pieces, and at both ends of the insulation of one of the steel pieces, artificially create a 25 mm × 20 mm stress release boot surface between the steel piece and the insulation (see Figure 1).
Apply tension in the direction perpendicular to the bonding surface of the specimen and measure the maximum stress reached when the specimen is damaged.
Foreword i
1 Scope
2 Normative references
3 Test principle
4 Equipment and tooling
5 Specimen
6 Test procedure
7 Testing result processing
8 Rejected specimens
9 Data processing and test report
