1、 FORD LABORATORY TEST METHODBI 167- 01Date Action Revisions 2007 03 16 Activated K. Mueller Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 1 of 5 FRICTION INDUCED WEAR PROCEDURE Application This test procedure is used to evaluate paint/substrate robustness against
2、 gouging on test panels or flat sections of parts. Apparatus Required 1. SLIDO II unit, FM Analysts, Inc., 5236 Plaza Aleman, Santa Barbara, CA 93111, 805-967-5992: 2. Tissue: Kimwipes or equivalent 3. Kapton film, FRALOCK, A Division of LOCKWOOD INDUSTRIES, INC., 21054 Osborne ST., Canoga Park, CA,
3、 91304, 808-709-1288. Product information: TKH-500, 2 “ x 50 ft long, 5 MIL P 46112(MR)B Type 1 4. Isopropyl Alcohol (IPA) FORD LABORATORY TEST METHODBI 167- 01Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 2 of 5 SLIDO II Configuration Layout Slido Apparatus (Cou
4、nterface Bob equipped with Kapton Film) The upper half of SLIDO houses the “TriboHead” superstructure with an instrumented counterface, servomotors, IR heaters and an environmental chamber. The lower half of the SLIDO configuration has the electronics, opto-isolation, data acquisition and power cond
5、itioning. Other components include the IR power conditioning, servo power amplification and optical isolation. SLIDO II is a state-of-art robotics instrument for controlling the motion of the TriboHead, which precisely measures the normal loads and traction forces with high fidelity. Measurement of
6、tribological forces are made directly at the contact wear-head creating exceptional diagnostics of friction-induced-damage, FID. SlidoSoft software makes the machine setup and test procedures easy. The SLIDOSOFT software also displays test results in an easy-to-view graphical environment which also
7、outputs test data in ASCII format for use with popular spreadsheets and plotting programs. Test Panels Quantity: Minimum 5 (8% gauge R&R) panels and/or flat sections of part. Type: Panels must be top gated, and part sections must be oriented for flow direction. Size: Minimum: 4 x 12 inches 101.6 x 3
8、04.8 mm or 4 x 10 inches 101.6 x 254.0 mm FORD LABORATORY TEST METHODBI 167- 01Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 3 of 5 Sample Preparation & SLIDO Test Conditions All panels/parts are to maintain nominal film builds, wet-on-wet, with 30 minutes 250F 1
9、21 C bake (and/or production representative process). Test panels/parts are not to be cleaned with any solvents. SLIDO test conditions are: Temperature: 155 F 68 C, acceleration: 20.0 in/sec2 0.51 m/sec2, velocity: 2.0 in/sec 0.051 m/sec Distance: 6 inches 0.152 m traversed, Load: 100 1500 lbf 445 N
10、 6672 N Procedure 1. Turn on CPU power 2. Turn on Slido II unit 3. Unlock emergency stop button CPU: 4. Once CPU is started, open SLIDO program SLIDO II: 5. Push the power enable button CPU: 1. Click on the “Set-up“ icon a. Set-up settings (units are English): i. Start Vertical Load = 100 ii. End Ve
11、rtical Load = 1500 iii. Head Velocity = 2.0 iv. Sample Temp = 155 v. Mounting Fixture Depth = 0.00 vi. Horizontal Start Point Offset = 0.00 vii. Sample Run Length = 6 viii. Sample Thickness = (Enter value in inches, typically 0.12 in) ix. Horizontal Test Accel = 20.00 x. Heat sample Click on yes FOR
12、D LABORATORY TEST METHODBI 167- 01Printed copies are uncontrolled Copyright 2007, Ford Global Technologies, LLC Page 4 of 5 a. Set-up settings (units are SI): i. Start Vertical Load = 445 ii. End Vertical Load = 6672 iii. Head Velocity = 2.0 iv. Sample Temp = 68 v. Mounting Fixture Depth = 0.00 vi.
13、Horizontal Start Point Offset = 0.00 vii. Sample Run Length = 0.152 viii. Sample Thickness = (Enter value in meters, typically 0.003 m) ix. Horizontal Test Accel = 0.51 x. Heat sample Click on yes 2. Click on the “Run“ icon 3. Click on the “Diagnostic“ icon SLIDO II: 4. Adjust the data acquisitions
14、X-axis & Z-axis on unit (using “screwdriver“ that is included with machine) so that Z0 and X1 are “zeroed out” (as close to zero as possible) on the CPU screen. CPU: 5. Click on the “Run“ icon FORD LABORATORY TEST METHODBI 167- 01Printed copies are uncontrolled Copyright 2007, Ford Global Technologi
15、es, LLC Page 5 of 5 SLIDO II: 6. Place test sample into holder and clamp down. Clamps can be adjusted to securely clamp plaques of varying thicknesses. 7. Clean Kapton film with tissue (Kimwipe or equivalent) soaked with IPA. a. Clean Kapton film every 100 tests. b. To remove Kapton film, soak in ac
16、etone. c. Use cyanoacrylate adhesive to bond film to the counterface bob 8. Click on the “Run“ icon 9. Once test is complete measure length of travel to failure point (see evaluation section) Evaluation Performance is calculated by: Distance traversed (inches) up to failure point * 1400 + 100 = lbf
17、of SLIDO Performance 6 (OR) Distance traversed (meters) up to failure point * 6227 + 445 = Newtons of SLIDO Performance 0.152 General Information The testing with SLIDO involves a very smooth cylindrical counterface with the durable Kapton covering. SLIDO uses 2D material tests that attempt to mimic
18、 the damage experienced in real fascia situations. Both the counterface shape and the time varying load distribution into the TPO influence the stress, as shown by analysis. Experiments are also in progress to develop 3D counterfaces that replicate the more severe 3D damage often seen on full size f
19、ascias. Real world user profiles on complex fascia have specific deflection histories. From extensive full vehicle damage tests by FM Analysts, the loads transmitted into real fascia can be simulated with these 2D SLIDO tests. The software initiates motion at a fixed acceleration until the desired v
20、elocity is reached. The counterface glides along the specimen at constant velocity until the designated test length is reached. The deceleration to stop is the same magnitude as the acceleration. The FID is initiated at a distance, lf from the start. FID occurs at a specific compression load, FZ and
21、 traction (friction) load, FX. Both forces are acquired by the custom sensors in the TriboHead and recorded by the data acquisition system. In English units: The compression force at startup is generally 100 lbs and the maximum force is usually 1500 lbf. These forces are uniformly distributed across
22、 the 1.7 inch width of the Kapton counterface. The FID occurs at a compression force of FZ= 100 + lf / 6. * 1400. Thus a slide distance half way, lf= 3.0 inches results in a compression force FZ= 800 lbf. Most clear coats have a dynamic sliding friction coefficient ranging = 0.25 0.60. References No
23、menclature and Test Data Results for SlidoTMTesting of Scratch, Wear, MAR, and FID, Dennis J. Mihora, FM Analysts, Inc., Santa Barbara, CA SLIDO Schematic and Procedure, William Welland, Rose Ryntz, Visteon Corporation, Dearborn, MI SLIDO II: FM Analysts, Inc., 5236 Plaza Aleman, Santa Barbara, CA 93111
