scholarly journals Effects of hole stress concentration and its mitigation on the tensile strength of sheet moulding compound (SMC-R50) composites

Composites ◽  
1988 ◽  
Vol 19 (4) ◽  
pp. 283-287 ◽  
Author(s):  
P.K. Mallick
2011 ◽  
Vol 31 (8-9) ◽  
Author(s):  
Walter Michaeli ◽  
Christoph Kremer

Abstract This paper describes an opportunity to compute the surface waviness of compression moulded sheet moulding compound (SMC) parts by simulating residual stresses. First, different types of surface defects occurring on SMC parts are discussed. A method for calculating the surface waviness of the compression moulded part is presented, which combines the simulation of the production process and the structural computation. Modelling of the curing reaction and the development of mechanical properties are discussed and implemented. The potential of the computation method is shown for an automotive fender made of SMC. The results state that the curing reaction of SMC can be well described using the approach of Ng and Manas-Zloczower. The position of the measured waviness on the examined fender is in good agreement with the calculated stress distribution.


2001 ◽  
Vol 58-59 ◽  
pp. 189-203 ◽  
Author(s):  
Amelia Torres ◽  
Isabel de Marco ◽  
Blanca M Caballero ◽  
M.Feli Laresgoiti ◽  
Miguel A Cabrero ◽  
...  

2013 ◽  
Vol 456 ◽  
pp. 451-455
Author(s):  
Jun Yang ◽  
Bo Li ◽  
Qiang Jia ◽  
Yuan Xing Li ◽  
Ming Yue Zhang ◽  
...  

Fatigue test of the welded joint of 5083 aluminum alloy with smooth and height of specimen and the weld zone than the high test measurement and theoretical stress concentration coefficient calculation, the weld reinforcement effect of stress concentration on the fatigue performance of welded joints. The results show that: Smooth tensile strength of specimens for 264MPa, fatigue strength is 95MPa, the tensile strength of the 36%. Higher tensile strength of specimens for 320MPa, fatigue strength is 70MPa, the tensile strength of the 22%. Higher specimen stress concentration coefficient is 1.64, the stress concentration to the weld toe becomes fatigue initiation source, and reduces the fatigue strength and the fatigue life of welded joints.


Author(s):  
L.M. Martulli ◽  
Thomas Creemers ◽  
Erich Schöberl ◽  
Nicholas Hale ◽  
Martin Kerschbaum ◽  
...  

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