 | COMMERCIAL ENGINE STANDARD PRACTICES MANUAL | Dated: 04/01/2006 |
| SPM 70-70-01 TESTING AND QUALITY ANALYSIS FOR METAL-TO-METAL BONDING | ||
| COMMERCIAL ENGINE STANDARD PRACTICES MANUAL | Dated: 04/01/2006 |
| SPM 70-70-01 TESTING AND QUALITY ANALYSIS FOR METAL-TO-METAL BONDING | ||
| TASK 70-70-01-700-001 |
| 1 . | General. |
| A. | This procedure consists of a series of operations, as contrasted with simple tests such as the cellophane tape pull-test for paint adherence or "feel" tests for bearing end-play. Test specimens and special tools or fixtures required in the performance of specific tasks are described in the procedures that make use of them. |
| 2 . | Metal-To-Metal, Film Adhesive Bonding Quality Tests. |
| Subtask 70-70-01-700-001 |
| B. | All metal-to-metal bondments made with a thermal setting film adhesive must have certain mechanical properties demonstrated in the bonded joints. Process control specimens should be processed identically to and cured concurrently with all repair bondments. The process control (test) specimens must meet the strength requirements detailed in Table 1 for the following specimens. |
| (1) | Tensile Lap Shear Test. |
| (a) | This test is conducted on five specimens at normal and elevated temperatures. Refer to TASK 70-71-05-700-006, Adhesive Bond Strength Lap Shear Testing. |
| (2) | Climbing Drum Peel Test. |
| (a) | This test is conducted on four specimens at room temperature. Specimens are panel assemblies and one face sheet is stripped off. Refer to TASK 70-71-06-700-007, Adhesive Bond Strength Climbing Drum Peel Test. |
| (3) | Flatwise Tensile Test. |
| (a) | This test is conducted on six specimen panel assemblies, three at normal temperature and three at elevated temperatures. Refer to TASK 70-71-07-700-008, Adhesive Bond Strength Flatwise Tensile Testing. |