SAE J175 pdf download
SAE J175 pdf download.Wheels—lmpact Test Procedure-—Road Vehicles.
1. The SAE Recommended Practice establishes minimum performance requirements and related uniform laboratory test procecjres for evaluating axial (lateral) curb impact collision properties of all wheels intended for use on passenger cars and light trucks. It is equivalent to ISO 7141-1981 with the exception of the Definitions section which cites SAE J393.
2. References
2.1 Applicable Publications-—The following publications are provided for Information purposes only and are not
a required part of this document.
2.1.1 SAE PuicATIoN—Available from SAE. 400 Commonwealth Drive, Warrendale, PA 15096-0001.
SAE J393—Nomenclature-—Wheels. Hubs, and Rims for Commercial Vehicles
2.2 Related Publications—The following publications are provided for information purposes only and are not a required part 01 this document.
2,2.1 ISO PueuCATIoNs—Avallable from ANSI, 11 West 42nd Street. New York. NY 10036-8002.
ISO 7141—Road vehicles—Wheels—Impact test procedures
ISO 3911—Wheels/rims—Nomenclature, designation, marking and units of measurement
3. DefinItions—See SAE J393.
4. Test Procedures
4.1 Whels for Test—Only fully-processed new wheels which are representative of wheels intended for passenger car and light truck applications shall be used for each test. Tires and wheels used for test should not be used subsequently on a vehicle.
4.2 EquIpment—The test machine shall be one in which an Impact loading Is applied to the rim flange of a wheel complete with tire, The wheel shall be mounted with its axis at an angle of 13 degrees t 1 degree to the vertical so that its highest pomt is presented to the vertically acting striker. The impacting face of the striker system shall be at least 125 mm wide and at least 375mm long. (See Figure 1.)
The test should be conducted at room temperature (10 to 38 °C).
4.3.1 DROPPING HEGHT—The ckopping height for the striker weight shall be 230 mm ± 2 mm above the highest part of the rim flange.
4.3.2 ALIGNMENT OF STRIKER—The striker shall be over the tire and the edge must overlap the rim flange by
5. Failure Crlteria—( See Notes 1 and 2.)
5.1 The failure criteria are:
5.1.1 Visible fracture(s) penetrating through a section of the center member of the wheel assembly.
5.1.2 Separation of the center member from the rim.
5.1.3 Total loss of the air pressure within one manute after Impact
NOTE 1—Deformation of the wheel assembly, or fractures in the area of the rim section contacted by the face ptate of the weight system. do not constitute a failure.
NOTE 2—It it is suspected that failure resufts from subsequent impacts caused by the mass rebounding or the mass testing on the tire, means should be employed to capture the mass after first impact. Only one impact is intended.
