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    FORD FLTM BS 004-03-2000 BEND STRENGTH OF PAPER BOARD《纸板的抗弯强度》.pdf

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    FORD FLTM BS 004-03-2000 BEND STRENGTH OF PAPER BOARD《纸板的抗弯强度》.pdf

    1、 FORD LABORATORY TEST METHOD BS 004-03 Date Action Revisions 2000 11 10 Revised Editorial no technical change A. Cockman 1992 08 06 Printed copies are uncontrolled Page 1 of 3 Copyright 2000, Ford Glob al Technologies, Inc. BEND STRENGTH OF PAPER BOARD Application This procedure is used to measure t

    2、he functional strength of formed paper - type boards used as package trays and other interior trim components. Apparatus Required Testing Machine Instron Model 7M or equivalent . Accessories Aluminum support plate, approximately 18 x 16 x 1/2 inch. Bull dog or “C“ clamp. Pulley - 1 1/2 inch diameter

    3、. Tensile Load Cell C. Steel Wire. Conditioning and Test Conditions All test values indicated herein are based on material condit ioned 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 othe

    4、rwise specified. Procedure 1. Cut a section of the formed board at least 6 inches wi de by the full depth of the part. 2. Calibrate the testing instrument, following the directions in the instruction manual. 3. Set crosshead chart speeds to 5 inches/minute by using proper gear combination as shown i

    5、n gear selection chart for various spee ds (see instruction manual). 4. Set load scale to 50 lbs. 5. Attach steel plate to crosshead. FORD LABORATORY TEST METHOD BS 004-03 Page 2 of 3 Copyright 2000, Ford Global Technologies, Inc. 6. Mount the formed board sample on the support plate and clamp secur

    6、ely so that the formed section is facing upwards. Place the clamps at the point of tange ncy - between the part and the support plate. 7. Attach wire to center of formed edge, either by hook, screw or “C“ clamp; insert through pulley on back edge of the support plate, and finally in the top jaws of

    7、the Instron (see diagram). 8. Slowly lower crosshead to remove slack in the wire and observe chart pen for alignment on zero load. 9. Start the test and record: (1) The force required to bend the formed edge to an imaginary line perpendicular to the point of tangency between the formed board an d th

    8、e support plate and (2) the force required to crack or break the board. 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 it s facilities. FORD LABORATORY TEST METHOD BS 004-0

    9、3 Page 3 of 3 Copyright 2000, Ford Global Technologies, Inc. BEND STRENGTH OF PAPER BOARD Aluminum Plate as Mounted to be Parallel to Machine Base Direction of pull on formed part to be slightly down by assembling fixture so that wire height at pulley and wire height at test specimen has a ratio of 4:1 e.g. specimen height = 3 inches, pulley height = 3/4 inch.


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