1、 FORD LABORATORY TEST METHODBO 163-01 Date Action Revisions Rev. 0 2011 01 12 Activated S. Draheim, NA Printed copies are uncontrolled Copyright 2011, Ford Global Technologies, LLC Page 1 of 3 Denting Test for Interior Parts with Metal Appliqus Application This procedure is used to determine the eff
2、ects of point load impact on metal appliqus Apparatus Required Steel Ball Steel ball bearing ball approximately 16.5 grams with a diameter of 16 +/- 1 mm. Tube Apparatus with Ball Release Mechanism The apparatus consists of a rigid tube with an inner diameter large enough to let the ball travel free
3、ly. The ball release mechanism can be a flat plate or a cylinder that holds the ball in the tube 10 cm above the test surface. The mechanism is then removed, releasing the ball. A V notch should be cut into the lower end to let air escape during the ball drop and light in for positioning. Edges shou
4、ld be free of burs. (See Figure 1) Lengths of inch copper plumbing pipe may be suitable. Millimeter scale with at least 0.5 increments Magnifying glass, 6 to 10 X Conditioning and Test Conditions All test values indicated herein are based on material conditioned in a controlled atmosphere of 23 +/-
5、2 C and 50 +/- 5 % relative humidity for not less than 24 h prior to testing and tested under the same conditions unless otherwise specified. Chemicals, materials, parts, and equipment referenced in this document must be used and handled properly. Each party is responsible for determining proper use
6、 and handling in its facilities. FORD LABORATORY TEST METHODBO 163-01 Printed copies are uncontrolled Copyright 2011, Ford Global Technologies, LLC Page 2 of 3 Procedure 1. Test sample should be held securely with the impact surface horizontal so the area to be tested is normal to the direction of i
7、mpact. 2. Position tube apparatus directly over the selected impact location so the released steel ball drops vertically on the test sample. 3. Insert the ball release into the tube and place the steel ball on to the ball release. The ball release should hold the bottom of the steel ball 10 +/- 0.1
8、cm above the test sample. 4. Remove the ball release and allow the ball to impact the test sample. 5. Perform a visual evaluation for cracking, delamination, surface impression, and denting. Cracking Any cracking of the top coat, middle layer, substrate, or edges Delamination Any blistering or peeli
9、ng between any layers on surface or edges Surface impression is caused by direct contact with the ball. It will be circular and have a defined edge that can be measured. Denting is the bending of the metal sheet around the outside of the surface impression. (See Figure 2 ) 6. If a surface impression
10、 exists, lay the scale next to the surface impression and measure using the magnifying glass. Measurements should be recorded to the nearest 0.5 mm. Figure 1 Steel Ball Ball Release Tube Test Sample 10 +/- 0.1 cm Slots or holes for Ball Release FORD LABORATORY TEST METHODBO 163-01 Printed copies are uncontrolled Copyright 2011, Ford Global Technologies, LLC Page 3 of 3 Figure 2 Example of acceptable sample with: - Surface impression less than 1.0mm - No denting Example of NOT acceptable sample with: - Surface impression less than 1.0mm - With Denting
