chances of bending 19" rims?
02-02-12, 06:54 PM
#16
Forged wheel bends but won't crack. Vice versa for casted wheel. The forging process makes the molecular structure to flow in the uniform pattern and thus stronger but not brittle characteristic of material.
Mesh rim (BBS Style) usually be the most strongest compared to larger-and-less spokes design (e.g., Five spokes design) because more spokes mean better impact distribution over the rim. Due to Large-and-less spoke design, the rim will be subjected to higher uneven load distribution across the the circumference under the impact.
Mesh rim (BBS Style) usually be the most strongest compared to larger-and-less spokes design (e.g., Five spokes design) because more spokes mean better impact distribution over the rim. Due to Large-and-less spoke design, the rim will be subjected to higher uneven load distribution across the the circumference under the impact.
02-04-12, 02:53 AM
#17
Good challenge, show me your proof then.
http://www.icf11.com/proceeding/EXTENDED/5591.pdf
Quote"3.3 FRACTURE TOUGHNESS TEST Although there is similarity between the tensile properties and the fatigue crack growth resistance of cast and forged railway wheels, the fracture characteristics of the two types of materials were found to be entirely different. This dissimilarity is best portrayed by the nature of the load- displacement plots obtained during fracture toughness testing in the two cases. Figs.2 and 3 show such plots for specimens extracted from the cast and forged wheels respectively. It can be seen that the cast material (Fig.2) exhibits catastrophic fracture without substantial deviation from elastic deformation behaviour for all locations and orientations of specimens. Materials such as these are amenable to linear elastic fracture mechanics (LEFM) formulation, and it is likely that it may be
possible to characterize their fracture behaviour by the LEFM fracture toughness parameter KIc.
The forged material, on the other hand, shows (Fig.3) considerable plastic deformation and deviation from the elastic loading line as it is stressed. Fracture in these cases is through stable extension of cracks, unlike the catastrophic instability in the cast material. The fracture behaviour can be said to be falling under the category of elastic-plastic fracture mechanics (EPFM), the fracture toughness, in this case, being characterized by the EPFM parameter JIc obtained from the J-R curve. In general terms, it can be said that EPFM materials have a higher fracture toughness than LEFM materials, on a comparative scale. It may be pointed out that the periodic unloading lines in the load-displacement plots in Fig. 3 are used for compliance based crack length measurements in the single specimen technique for ductile fracture toughness determination, as discussed earlier."
http://www.smw.com/en/pages/58/Benef...ag-Wheels.html
Quote"A forged wheel does not crack; it bends without cracking and can be easily repaired, if necessary. Common casting defects, such as cavities and cracks, are non-existent in forging. So our forged mag wheels are stronger and more durable. Also, all forged mag wheels produced by SMW Engineering undergo strict quality control to comply with road safety requirements."
http://www.icf11.com/proceeding/EXTENDED/5591.pdf
Quote"3.3 FRACTURE TOUGHNESS TEST Although there is similarity between the tensile properties and the fatigue crack growth resistance of cast and forged railway wheels, the fracture characteristics of the two types of materials were found to be entirely different. This dissimilarity is best portrayed by the nature of the load- displacement plots obtained during fracture toughness testing in the two cases. Figs.2 and 3 show such plots for specimens extracted from the cast and forged wheels respectively. It can be seen that the cast material (Fig.2) exhibits catastrophic fracture without substantial deviation from elastic deformation behaviour for all locations and orientations of specimens. Materials such as these are amenable to linear elastic fracture mechanics (LEFM) formulation, and it is likely that it may be
possible to characterize their fracture behaviour by the LEFM fracture toughness parameter KIc.
The forged material, on the other hand, shows (Fig.3) considerable plastic deformation and deviation from the elastic loading line as it is stressed. Fracture in these cases is through stable extension of cracks, unlike the catastrophic instability in the cast material. The fracture behaviour can be said to be falling under the category of elastic-plastic fracture mechanics (EPFM), the fracture toughness, in this case, being characterized by the EPFM parameter JIc obtained from the J-R curve. In general terms, it can be said that EPFM materials have a higher fracture toughness than LEFM materials, on a comparative scale. It may be pointed out that the periodic unloading lines in the load-displacement plots in Fig. 3 are used for compliance based crack length measurements in the single specimen technique for ductile fracture toughness determination, as discussed earlier."
http://www.smw.com/en/pages/58/Benef...ag-Wheels.html
Quote"A forged wheel does not crack; it bends without cracking and can be easily repaired, if necessary. Common casting defects, such as cavities and cracks, are non-existent in forging. So our forged mag wheels are stronger and more durable. Also, all forged mag wheels produced by SMW Engineering undergo strict quality control to comply with road safety requirements."
I hope I didn't jinx myself...
02-08-12, 05:21 PM
#24
02-08-12, 06:50 PM
#25
02-08-12, 09:23 PM
#26
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all depends on the impact on potholes one time was on hwy doing like 150 in my v dub took a sip of coffee hit a pothole i knew its was bad by the impact and bend the lip on my rims they were bbs i never bought bbs again all depend just dodge the holes best way cuz thast what i do
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