The test result show that BGB plastic cushion material can restrict the tensile stress and strain and prevent the facing from crack under a relatively small sliding displacement.
The front impact roller causes transverse plastic compression strain in the weld which is in the brittle temperature range, which counteracts the tensile strain which leads to hot cracking.
The plastic fiber selected has different ultimate tensilestrain and elastic modulus, and the fiber can be carbon fiber, aramid fiber, glass fiber and the like.