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    • 1. 发明专利
    • METHOD OF NON-DESTRUCTIVE INSPECTION FOR RESINOUS AUTOMOTIVE BUMPER BEAMS
    • CA2033015A1
    • 1991-06-28
    • CA2033015
    • 1990-12-21
    • SATO SHOJIUSHIKI YOJIMASUDA HISASHI
    • SATO SHOJIUSHIKI YOJIMASUDA HISASHI
    • G01M5/00G01M17/007G01N3/20G01M17/00
    • A method of non-destructive inspection for resinous automotive bumper beams comprises applying flexural load to the center of a bumper beam by a pressing jig in a state that the both ends of the bumper beam have been pivotably supported to gradually bend the bumper beam, measuring or determining the bending strain and energy absorption of the bumper beam upon the application of the flexural load, said energy absorption being calculated from said bending strain and flexural load, and judging the bumper beam to be good in quality only when the energy absorption of the bumper beam reaches at least a control value of the energy absorption, which is set up in advance, in a state that the bending strain of the bumper beam is at most a control value of the bending strain, which is set up in advance. The control value of the energy absorption is determined by correcting the value of energy absorption upon destruction of a bumper beam, which has been found in a standard destructive test. The control value of the bending strain is determined by correcting the bending strain in the standard destructive test. These corrections are performed on the basis of the correlations between a plurality of data as to the energy absorption and bending strain in the standard destructive test and a trial destructive test, respectively.
    • 10. 发明专利
    • WATER CONVEYANCE PREVENTIVE PACKING FOR GAS PRESSURE WELDING OF REINFORCEMENT
    • JPH1058163A
    • 1998-03-03
    • JP25078996
    • 1996-08-16
    • SATO SHOJI
    • SATO SHOJI
    • E04C5/16B23K20/00B23K20/26E04G21/12F16J15/10
    • PROBLEM TO BE SOLVED: To prevent water from brought into contact with a pressure welding part of a reinforcement by holding the reinforcement at an upper part of a joining surface with packing, forming a pool-shaped groove at an upper part of the packing, providing a drain port, and discharging water. SOLUTION: A reinforcement is heated and pressure welded by a pressure welding surface 8. The reinforcement on an upper part of the pressure welding surface 8 is held by the packing 5. The packing 5 is made of the elastic solid material. A pool-shaped groove 4 is provided on an upper part of the packing 5. Though water drops 1 from the reinforcement in a wet condition in the rain, water is checked by the packing 5, and stored in the pool-shaped groove 4. Water stored in the groove 4 is discharged outside from a drain port 6 provided in the groove 4. No water reaches the pressure heating part 8. A two-split cover 2 made of iron or plastic is provided on the outer side of the packing 2 to facilitate attachment/detachment of the packing 5. When the packing 5 is mounted on the reinforcement, the packing 5 is tightened by tightening screws 3 through the cover 2.