Question
Full working is appreciated, thanks
A 32 mm nominal diameter shaft is specified as a H8-g7 fit in a guiding sleeve. Determine the limits of size for the shaft and for the sleeve bore, and calculate the maximum and minimum clearance or interference that these limits of size provide. During a visual inspection a 14 mm long crack is found in the thin steel plate with geometry as shown in Figure 2. The material data supplied is for AISI4340 steel and is taken from Table 6.1 of the textbook Juvinall & Marshek. Determine the highest tensile load P that the plate can now sustain without sudden fracture occurring. Comment on the validity of using this data in predicting the fracture behaviour of the thin plate. Suggest some techniques that may be used to detect the presence of such a crack. The cover plate on a reaction vessel is secured by a number of grade 5.8 bolts with rolled threads. The cover plate joint material is three times stiffer than the bolt stiffness (kc = 3kb). There is sufficient space on the flange of the cover plate for a large number of bolt heads. The cover plate seals a cylindrical section of the vessel with a bore diameter of 200 mm. Company practice is that a factor of safety of 2.2 be used in all pressure vessel calculations. The pressure in the reaction vessel cycles between 0 to 8 MPa, and usage patterns of the reaction vessel dictate that it be designed for "infinite life". Explain what this term might actually mean in this situation. Choose a bolt size from the available sizes of M12, M14 or M16 and give reasons for your answer. Determine an appropriate initial tightness for the bolts, and justify your answer. Determine the number of bolts required to prevent fatigue failure.
Explanation / Answer
Thanx for your appreciation but there is no qustion.
