An investigation on the mechanical behavior of expanded polystyrene (EPS) geofoam under different loading conditions

2017 ◽  
Vol 21 (1) ◽  
pp. 123-129 ◽  
Author(s):  
Gouda Mohamed ◽  
Riham Hegazy ◽  
Moenes Mohamed
2016 ◽  
Author(s):  
A. H. Padade ◽  
S. Dutta ◽  
M. B. Nadaf ◽  
B. Ram Rathan Lal ◽  
J. N. Mandal

Author(s):  
Hao Huang ◽  
Abhijit Dasgupta ◽  
Ehsan Mirbagheri ◽  
Srini Boddapati

The focus of this paper is on the stress-strain behavior and creep response of a pressure-sensitive adhesive (PSA) with and without carrier layers. This study consists of two phases. The first phase focuses on understanding of the effects of fabrication profiles, including bonding pressure, bonding temperature, bonding time, and aging time, on the PSA joint strength. This part of the study is used to identify an acceptable bonding and aging conditions for manufacturing a robust PSA bonded assembly. Specimens fabricated with this selected set of bonding process conditions are then used for mechanical characterization. The second phase focuses on the assembly’s mechanical behavior (stress-strain behavior and the creep curves) under different loading conditions, including loading stress, loading rate, and loading temperature. The mechanical behavior of PSA bonded assemblies is affected not only by the loading conditions, but also by the assembly architecture. The mechanical behaviors and failure modes of PSAs with and without carrier layers are compared. The reasons for these differences are also discussed.


Metals ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 733
Author(s):  
Takeshi Iwamoto ◽  
Tao Suo

Clarifying the mechanical behavior of alloys is quite important to enhance their performanceand thus expand their application in various fields. [...]


2008 ◽  
Vol 26 (2) ◽  
pp. 189-195 ◽  
Author(s):  
S. Banu Ikizler ◽  
Mustafa Aytekin ◽  
Evin Nas

2009 ◽  
Vol 131 (6) ◽  
Author(s):  
Huiyang Luo ◽  
Chenkai Dai ◽  
Rong Z. Gan ◽  
Hongbing Lu

The mechanical behavior of human tympanic membrane (TM) has been investigated extensively under quasistatic loading conditions in the past. The results, however, are sparse for the mechanical properties (e.g., Young's modulus) of the TM at high strain rates, which are critical input for modeling the mechanical response under blast wave. The property data at high strain rates can also potentially be converted into complex modulus in frequency domain to model acoustic transmission in the human ear. In this study, we developed a new miniature split Hopkinson tension bar to investigate the mechanical behavior of human TM at high strain rates so that a force of up to half of a newton can be measured accurately under dynamic loading conditions. Young’s modulus of a normal human TM is reported as 45.2–58.9 MPa in the radial direction, and 34.1–56.8 MPa in the circumferential direction at strain rates 300–2000 s−1. The results indicate that Young’s modulus has a strong dependence on strain rate at these high strain rates.


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