1、 FORD LABORATORY TEST METHODB0 120-04Date Action Revisions 2007 11 19 Revised Inserted General Comments, Figure 1 Revised Apparatus and Materials Required; Deleted Procedure & original Figure 1 and changed original Figure 2 to Figure 3 M. Mehandru 2001 03 28 Revised Editorial no technical change A.
2、Cockman 1999 01 26 Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 1 of 3 ADHESION RESISTANCE OF MIRROR BUTTON BRACKETS Application This test method determines the amount of peel force required to separate a rear view inside mirror from the windshield. Apparatus an
3、d Materials Required Method 1: Instron type mechanical pull tester with clamping bracket. The clamping bracket load point is to be 10 +/- 2 mm from the top edge. A cleaving force is required. Pulling from the center of the mirror bracket will not provide the needed peeling effect. See Figure 1. Meth
4、od 2: A modified torque wrench with specific loading geometry. Mirror button bracket load point is to be 10 +/- 2 mm from the top edge with a pivot point 5 mm back of bracket top and 13 mm above the glass. The indicator has to be calibrated with a known force at the 10 mm load point. See Figure 2, a
5、nd Figure 3. The modified wrench will no longer be a torque wrench and as a result, its torque scale needs to be replaced with a lift force scale. Conditioning and Test Conditions All test values indicated herein are based on material conditioned in a controlled atmosphere of 23 +/- 2 C and 50 +/- 5
6、% relative humidity for not less than 24 h prior to testing and tested under the same conditions unless otherwise specified. General Comments Method 1 is good for small pieces that are to be destructively pulled and the highest need for accuracy and repeatability are needed. Method 2 can be used on
7、both windshields and small sections but can be to some degree operator influenced. This method is the best for checking minimum load requirements. Either Method 1 or Method 2 is to be used to determine bond peel strength. Procedure: Method 1 1. Mount sample on test stand 2. Attach clamping bracket 3
8、. Pull at 50 mm/sec 4. Report any separation or loss of adhesion of the mirror bracket to the glass FORD LABORATORY TEST METHODB0 120-04Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 2 of 3 Procedure: Method 2 1. Verify modified torque wrench calibration. 2. Attac
9、h the modified torque wrench to the mirror bracket as shown in Figure 3. 3. Apply a force as specified by the relevant engineering material specification to the torque wrench in the direction shown in Figure 3. 4. Report any separation or loss of adhesion of the mirror bracket to the windshield. Che
10、micals, materials, parts, and equipment referenced in this document must be used and handled properly. Each party is responsible for determining proper use and handling in its facilities. Figure 1 Figure 2 FORD LABORATORY TEST METHODB0 120-04Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 3 of 3 ADHESION RESISTANCE OF MIRROR BRACKETS Figure 3
