Edge, Screw, and mixed dislocations - Physics Forums
2007年7月1日 · An excellent question. In reality mixed type prevails (if you go as far as to consider 3D dislocation lines in a realistic material with its imperfect structure including point …
Trouble with Estimating GaN Screw Dislocation Density - Physics …
2012年4月22日 · 1.35° = 3.14159 Rad.*1.35°/180° = 0.023562 Rad. not 4.74 (you forgot to divide by 180, I presume). The screw-type dislocation density n std is equal to the following (your …
Screw dislocation displacement discontinouty - Physics Forums
2021年9月13日 · Consider a screw dislocation, The displacement field is given by And the strain field is derived by My question is that the displacement seems discontinuous across the …
Effect of Temp on yield stress and fracture toughness - Physics …
2010年1月13日 · The most significant factor which is determined by the temperature is the mobility of the structural defects such as grain boundaries, point vacancies, line and screw …
How Does the Action-Reaction Principle Apply to a Screw Fastener …
2020年7月30日 · A screw fastener advances into a nut. Assuming there are no frictional forces (or negligible): a) Is the action force tangential to the male helical thread (screw) and the reaction …
Understand Power Required for Screw Air Compressor - Physics …
2016年9月7日 · Could someone help me with getting an understanding of the equations for the power required to compress screw air please. Engineering news on Phys.org Researchers …
Calculate the torque needed to move a lead screw - Physics Forums
2021年5月24日 · 2) Assume a screw with a force F. In the homework world, that force is applied against a nut, and the assigned problem is to calculate the torque given a friction coefficient. …
Converting a screw's linear speed to rotational - Physics Forums
2013年6月23日 · You need to know the pitch of the screw thread. eg how many turns per meter. If the thread has a very coarse pitch the ball will move a long way for each revolution. If the …
Velocity Ratio, mechanical advantage, Efficiency of a screw jack
2020年7月16日 · For this screw jack, the input work (90 Newtons-meter or Joules) is the work done on the machine as the input force (80 Newtons) acts through the input distance (1.13 …
Turnbuckles and loss of preload - Physics Forums
2023年12月5日 · Turnbuckles have a right hand thread and a left hand thread. That implies that if I pull from both ends, the turnbuckle will resist the tension because the inner body would need …