نتایج جستجو برای: s modulus

تعداد نتایج: 734892  

2016
M. O’ Dowd W. Ruch E. Starke

The Young's modulus, s h e a r modulus and P o i s s o n ' s r a t i o were d e t e r m i n e d u s i n g a n u l t r a s o n i c p u l s e e c h o t e c h n i q u e . T h r e e c o m m e r c i a l l y f a b r i c a t e d a l u m i n u m c o p p e r l i t h i u m a l l o y s and an aluminum-lithium binary a l l o y were examined. The e l a s t i c p rope r t i e s were measured a s a func t ion...

Journal: :Journal of the Japan Institute of Metals and Materials 1991

Journal: :Journal of the Japan Institute of Metals and Materials 1955

1998
K. Kopotun

Let f 2 C 1 ?1; 1] change its convexity nitely many times in the interval, say s times, at Y s : ?1 < y s < < y 1 < 1. We estimate the degree of simultaneous approximation of f and its derivative by polynomials of degree n, which change convexity exactly at the points Y s , and their derivatives. We show that provided n is suuciently large, depending on the location of the points Y s , the rate...

Journal: :The Journal of chemical physics 2009
Justin B Hooper Dmitry Bedrov Grant D Smith Ben Hanson Oleg Borodin Dana M Dattelbaum Edward M Kober

Isothermal compression of poly (dimethylsiloxane), 1,4-poly(butadiene), and a model Estane (in both pure form and a nitroplasticized composition similar to PBX-9501 binder) at pressures up to 100 kbars has been studied using atomistic molecular dynamics (MD) simulations. Comparison of predicted compression, bulk modulus, and U(s)-u(p) behavior with experimental static and dynamic compression da...

2006
Ute Rabe U. Rabe

Abbreviations a 1 , a 2 , a 3 , a 4 and A 1 , A 2 , A 3 , A 4 Constants in the shape function y(x) a C Contact radius α Wave number of the flexural waves A Cross-section area of the cantilever b Thickness of the cantilever c P Ratio φ Lat /φ d Y 0 , d X0 Normalized amplitude of the sensor tip in y-and x-direction, respectively δ n , δ L Normal, lateral contact deflection (in the coordinate syst...

2010
Randy H. Ewoldt Timothy M. Winegard Douglas S. Fudge

We report here the first experimental measurements of nonlinear rheological material properties of hagfish slime, a hydrated biopolymer/biofiber network, and develop a microstructural constitutive model to explain the observed nonlinear viscoelastic behavior. The linear elastic modulus of the network is observed to be G′ ≈ 0.02 Pa for timescales 0.1 s ≤ t ≤ 10 s, making it one of the softest el...

2007

Kennedy (1965) reported small clear strength values for most Canadian species. The average value for modulus of rupture for Douglas Fir based upon 1057 specimens was reported to be 7540 p. s. (52 026 kN/m2 ) when tested in the green (wet) condition while the average value for air-dried specimens adjusted to 12% moisture content was found to be 12,850 p.s.i. (88 665 kN/m2 ), an increase of 71%. ...

In this paper, $(p,q)$-Lupas Bernstein Stancu operators are constructed. Statistical as well as other approximation properties of $(p,q)$-Lupac{s} Stancu operators are studied. Rate of statistical convergence by means of modulus of continuity and Lipschitz type maximal functions has been investigated.

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