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Question on Fatigue crack growth C and m Paris Law

Submitted by Rem on

Are m and C in the paris law equation dependant on the material property or geometry?

For example if using the same material with different thickness, do the C and m values change? For clarity assume centre notched plates, with different plate thicknesses but same material (steel or aluminium).

 

I appreciate your time.

 

 

One of the Most Productive Collaborations in Physicals Sciences of All Time

Submitted by ShuodaoWang on

Written by Kent McDill

posted in Illinois, Northwestern, LiveBIG (Big Ten Network July 20, 2014)

"Illinois, NU Create Self-Charging Heart"
http://btn.com/2014/07/20/btn-livebig-illinois-northwestern-create-self…

 

Ultra-Strong Collagen-Mimic Carbon Nanotube Bundles

Submitted by Zuoqi Zhang on

 In spite of worldwide research, carbon nanotubes (CNTs) still have not fully realized their

 original promise as ideal reinforcements for composite materials due to a number of

 challenging issues such as weak interface, poor dispersion, misalignment and lack of optimized

 design. Here we propose a bio-inspired structure of CNT bundles with controllable

 crosslink density and staggered pattern of organization that mimic the architecture of

Elastic Bounds of Bioinspired Nanocomposites

Submitted by Zuoqi Zhang on

 Biological materials in nature serve as a valuable source of inspiration for developing

 novel synthetic materials with extraordinary properties or functions. Much effort to date

 has been directed toward fabricating and understanding bio-inspired nanocomposites

 with internal architectures mimicking those of nacre and collagen fibril. Here we establish

 simple and explicit analytical solutions for both upper and lower bounds of the elastic

Thomson Reuters has released a new list of highly cited researchers!

Submitted by weibang on


Thomson Reuters has released a new list of highly cited researchers for 2002-2012. You can find more at http://highlycited.com/index.htm#table 

The following solid mechanicians have been selected in the category of engineering, materials science, or computer science.

 

Satya Atluri (UC Irvine);

Yuri Bazilevs (UCSD);

Ted Belytschko (Northwestern University);

Yonggang Huang (Northwestern University);

Tom Hughes (University of Texas at Austin);

Run GEBT online within a web browser

Submitted by Wenbin Yu on

One can now run GEBT (Geometrically Exact Beam Theory), a general-purpose nonlinear composite beam solver, online within a web browser through cdmHUB.org. Users do not have to install the code on their own machine. And users can access to immediate support if run into any questions. You are welcome to try out the code and let me know any of your questions. 

Ultimate Linear Motion Mechanism For Clean Energy

Submitted by Jigar Y. Patel on

 

 

I apply force using one slider to another slider. Best part is one slider move little bit and help second slider to slide 6 times length at 70 % force.

Energy Used to move first slider=force*distance

=100N*0.05m

=5Nm

Energy Get on Other Slider= Force*Distance

=Force applied by first slider*cos(45`)*distance

=100*0.7*0.25

=17.5

We get 3 times energy on second slider than we use to move first slider.

International Center for Applied Mechanics (ICAM) 西安交通大学-国际应用力学中心(ICAM) 全球诚聘tenure-track PI及Post Doctor/Research fellow

Submitted by Miaomiao Tang on

International Center for Applied Mechanics (ICAM)

西安交通大学-国际应用力学中心(ICAM

全球诚聘tenure-track PIPost Doctor/Research fellow

(本招聘广告有效期至2014年12月31日)

Postdoctoral position - nonlinear dynamics

Submitted by gauravs on

Indian Institute of Technology Gandhinagar (IITGN) invites applications for a postdoctoral position from motivated individuals interested in modeling and simulation research in Nonlinear Dynamics (supervised by Profs. Pratyush Dayal and Gaurav Srivastava). These applications are sought under Post-Doctoral Fellowships Program of IITGN. The candidate will be required to develop a fully functional suite of computational tools to perform multiphysics modeling and simulation studies on soft materials.

Seminal research work: in-situ mechanical testing under electron microscope

Submitted by Amit Pandey on

A lot work has been done/published in the area of in-situ mechanical testing using electron microscopy. Please list which, according to what you feel has had a significant impact. Here are two in my opinion:

 Uchic, M. D., Dimiduk, D. M., Florando, J. N., & Nix, W. D. (2004). Sample dimensions influence strength and crystal plasticity. Science305(5686), 986-989.