1、 FORD LABORATORY TEST METHOD BI 108-01 Date Action Revisions 2001 03 14 Revised Editorial no technical change A. Cockman 1993 04 06 Printed copies are uncontrolled Page 1 of 2 Copyright 2001, Ford Global Technologies, Inc. IMPACT TEST FOR PAINTED PANELS Application This method is used to measure the
2、 impact resistance of painted steel panels and plastic panels or parts. Apparatus Required Impact Tested This instrument consists of an impact rod, a glide tube, a base plate, and a supporting bracket. The 25 mm diameter steel rod, which does the impacting, tapers at the impact end to form a round n
3、ose with 6.35 mm radius. The tube serves to glide the rod in its downward fall so that the nose of the rod engages a 12.7 mm hole in the base plate. The impact rod contains a pin that protrudes through a vertical slot in the guide tube. The tube is graduated so that when the rod is raised to one of
4、the marks and allowed to fall, a specific impact energy (weight x distance fallen) is delivered to a paint panel placed over the hole in the base plate. Source: Model IG-1115 Gardner Neotec Division of Pacific Scientific Co. 1110 East West Highway Silver Springs, Maryland 20910 U.S.A. Materials Requ
5、ired Test Panels Prepare steel panels as described in FLTM BI 103-02 or as required by the applicable Engineering Materials Specification. Plastic panels will be prepared using the recommended cleaning and painting methods established in the relevant Engineering Materials Specification for the speci
6、fic plastic under test. For parts, cut a 150 x 100 mm sample panel from a flat portion and test according to procedure. FORD LABORATORY TEST METHOD BI 108-01 Page 2 of 2 Copyright 2001, Ford Global Technologies, Inc. Conditioning and Test Conditions All test values indicated herein are based on mate
7、rial conditioned in a controlled atmosphere of 23 +/- 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. Procedure 1. Place the panel over the 12.7 mm hole in the base plate of the impact tester with the paint
8、ed side up or the plastic panel painted side up over a solid base plate. 2. Start the test by impacting the panel at an energy well below that designated by the Engineering Material Specification. Select another flat spot on the panel and impact at a higher energy. Continue impacting at a new locati
9、on in increments until the energy required by the Engineering Material Specification is reached. If feasible, continue impacting at two or three increments above that required by the Engineering Material Specification. The minimum distance between impacts shall be 25 mm. 3. Convert all “weight x dis
10、tance fallen“ readings into Nm (or cm.kg.f) as required by the Engineering Material Specification. Evaluation Examine the panel with the unaided eye and report any flaking or cracking that has occurred. When testing plastic, a minimum of three identical samples of both painted and unpainted panels o
11、r parts should be tested. The difference in impact resistance between the painted and unpainted samples should be reported as percent reduction. Chemicals, 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.
