نتایج جستجو برای: mechanical properties

تعداد نتایج: 1027336  

Journal: :journal of chemical health risks 0
neda javadian habibollah mirzai abdorreza mohammadi nafchi

native fish gelatin has some disadvantages such as high hydrophilic, and solubility in cold water. mixing with other biopolymers and crosslinking by sugars may improve functional properties of fish gelatin. so in this research, the effects of ribose were investigated on moisture sorption isotherm, solubility in water, and mechanical properties of cold water fish gelatin (cwfg) films. ribose sug...

ژورنال: مواد پرانرژی 2014

GAP propellants has good performance due to high energy of this polymer. Unfortunately, due to poor flexibility of GAP polymer and presence of rigid and conjugated azide side groups in its structure, they have poor mechanical properties especially under low temperatures. This article deals with methods of improving mechanical properties of solid composite propellants based on GAP through changi...

Borhani, E., Boutorabi, S.M.A., Tamizifar, M., Yousefieh, M.,

In the present research, the parameters of FSW process were optimized for the mechanical properties of thin aluminum- scandium alloys by a design of experiment (DOE) technique. The optimum conditions providing the highest mechanical properties were found by this method. Among the three factors and three levels tested, it was concluded that the tool rotational speed had the most significant effe...

F. Honarvar, M. Hamidnia

Achieving the mechanical properties of steels after various manufacturing and heat treatment processes is significant and essential. In production lines, after producing the specific and standard samples, mechanical properties have been measured by destructive processes which cause waste of cost and time. In addition, destructive techniques cannot detect the miniscule changes made in mechanical...

Journal: :پژوهش های علوم و صنایع غذایی ایران 0
hasan drogar mahdi khojastehpour bagher emadi mohammad hossein saiedirad

in this study, the physical properties (size, mass, volume, density, geometric diameter, sphericity and friction coefficient on galvanized steel and wood surface) and some mechanical properties of flesh and skin tissue (modulus of elasticity, bioyield stress, yield strain and toughness) for small, medium and large melons of ghasri variety were determined. means comparison was done by duncan’s m...

The main goal of this research is to extract the full mechanical properties of stitch biax and triax composite materials which are necessary for finite element analysis, based on limited available experimental data and without performing full static characterization tests. Utilized experimental data are limited to elastic modulus of two 0o and 45o directions. Using presented technique and afore...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهرکرد - دانشکده کشاورزی 1387

چکیده ندارد.

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بوعلی سینا - دانشکده علوم پایه 1387

چکیده ندارد.

2007
E. M. CHRISTENSEN

The surface material at the Surveyor 5 site is granular and slightly cohesive. Spacecraft footpads plowed trenches in this material as the spacecraft slid during landing. For a compressible soil model, a static bearing capacity of 2.7 newtons/cm •' gave best agreement with the observations. Static firing of the vernier engines against the surface moved surface particles; a crater 20 cm in diame...

Journal: :Physical review letters 2007
Roberto Bernal Pramod A Pullarkat Francisco Melo

The mechanical response of PC12 neurites under tension is investigated using a microneedle technique. Elastic response, viscoelastic relaxation, and active contraction are observed. The mechanical model proposed by Dennerll et al. [J. Cell Biol. 109, 3073 (1989).10.1083/jcb.109.6.3073], which involves three mechanical devices--a stiff spring kappa coupled with a Voigt element that includes a le...

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