A STUDY OF THE REHEAT CRACKING IN WELDING USING THE IMPLANT METHOD——FOR EVALUATION OF SUSCEPTIBILITY TO REHEAT CRACKING OF THREE PRESSURE VESSEL STEELS (14MnMoNbB, BHW38 AND 15Mn VNCu)
The relationship between medial crack length and normal loading was also investigated when specimens were indented by symmetrical wedges with interior angles of 30°-120°.
The forward problem is to solve the natural frequencies through a cracked structural model and the inverse problem is to quantitatively determine the crack parameters using the experimental testing frequencies.
To improve the machining precision of part surfaces and to facilitate tool design and cutting parameter selection, the initiation and propagation laws of glass cracks in specimens subjected to normal loading by symmetric wedges were investigated.
In addition, thermal cracking, thermal oxidization, carbonization and cyclization of organic substances on the surface of brake block can make the friction surface produce pores or cracks, thus fatigue wear occurs.
Continuous-flow reactor experiments were carried out to study coke formation from thermal cracking of home-made jet fuel RP-3 under supercritical conditions.