Phase Evaluation of Sr and CaO Added Mg-Al-Si Alloys

2015 ◽  
pp. 377-381
Author(s):  
Young-Gil Jung ◽  
Young-Ok Yoon ◽  
Shae K. Kim ◽  
Hyun Kyu Lim ◽  
Do Hyang Kim
Keyword(s):  
1999 ◽  
Author(s):  
Clarence E. Rash ◽  
Thomas H. Harding ◽  
John S. Martin ◽  
Howard H. Beasley
Keyword(s):  

2021 ◽  
Vol 1104 (1) ◽  
pp. 012023
Author(s):  
Satyajeet Kumar ◽  
Jay Shankar Kumar ◽  
Sandeep Tiwari ◽  
Sachendra ◽  
Om Prakash ◽  
...  

2021 ◽  
Vol 1 ◽  
pp. 2531-2540
Author(s):  
Joanna Papadopoulou ◽  
Vassilis Papakostopoulos ◽  
Vassilis C. Moulianitis

AbstractThis paper presents the re-design approach of an urban motorcycle helmet to prevent users bypassing the strap fastening system. Related studies show that although a full-face helmet provides the maximum protection to a rider, in practice, full-face helmeted riders in urban traffic tend to improperly fasten it. On that notion, the design goal was to conceive a helmet that combines the advantages of different helmet types while responding to urban driving needs. During design ideation possible solutions were examined focusing on different ways of accessing and fixating the helmet on a rider’s head, without using a strap fastening system. Preliminary concept development produced three design concepts, that were evaluated using two sets of prototypes: (a) the 3D printing method under a 1:2 scale was used to detect any design faults, while the 3D modeled concepts were evaluated in four different crash impacts regarding total deformation and von-Mises stress, and (b) 1:1 models of the three concepts were used by experienced riders to assess possible usability issues during helmet placement/removal. Results of the two-phase evaluation of the three concepts and design issues for further development of them are discussed.


1978 ◽  
Vol 100 (4) ◽  
pp. 704-710
Author(s):  
Ch. Just ◽  
C. J. Franklin

The need for a thorough and systematic standard evaluation program for new materials for modern industrial gas turbines is shown by several examples and facts. A complete list of the data required by the designer of an industrial gas turbine is given, together with comments to some of the more important properties. A six-phase evaluation program is described which minimizes evaluation time, cost, and the risk of introducing a new material.


Sign in / Sign up

Export Citation Format

Share Document