نتایج جستجو برای: tensile strength ts of rocks

تعداد نتایج: 21177225  

ژورنال: مواد پرانرژی 2015

The aim of this research is investigation of mechanical properties regarding the polyurethanes as the binder of plastic bonded explosives. Due to the great effect of mechanical properties on application of these materials, the influence of Isocyanate/Hydroxyl ratio, crosslink density, the type of curing agent, hard segment and temperature on mechanical properties of these materials were investi...

2013
Lebuhraya Tun Razak

In Malaysia, there is no research done on the tensile strength of structural size timber. The tension stress found in the Malaysian code of practice, MS 544: Part 2: 2001, was not determined directly and it was taken as 60% of the bending strength values of small clear specimens. This paper presents the results of the tensile test on structural size timber specimens from selected Malaysian Trop...

2014
Mohammed Mizanur Rahman Sanjida Afrin Papia Haque

Cellulose crystals (CC) were chemically derived from jute by alkali treatment, bleaching and subsequent hydrolysis with 40 % sulfuric acid. Infrared spectroscopy (FT-IR) suggested sufficient removal of lignin and hemicellulose from the raw jute and scanning electron microscopy (SEM), and X-ray diffraction (XRD) studies demonstrated the preparation of microcrystalline cellulose. CC reinforced po...

Journal: :journal of dentistry, tehran university of medical sciences 0
n. mohammadi assistant professor, department of operative dentistry, school of dentistry, tabriz university of me m. abed kahnamoui assistant professor, department of operative dentistry, school of dentistry, tabriz university of me me. ebrahimi chaharom assistant professor, department of operative dentistry, school of dentistry, tabriz university of me s. kimyai assistant professor, department of operative dentistry, school of dentistry, tabriz university of me m. bahari associate professor, department of operative dentistry, school of dentistry, tabriz university of me

objective: the aim of the present study was to compare microtensile bond strengths (μtbs) of glass fiber posts to different parts of intra-radicular dentin using conventional method and one-shot technique under different light intensities. materials and methods: twenty-eight single-rooted teeth were prepared to receive fiber posts: group 1: conventional method at light intensity of 600 mw/cm2; ...

2007
Manfred A. Lange Thomas J. Ahrens

We determined the dynamic tensile of fracturing and fragmentation properties of icy strength of ice and ice silicate mixtures at substances. Our goal in previous studies has been strain rates of •104 s -1. At these strain rates, to establish some data and scaling laws related to ice has a tensile strength of ~17 MPa, and impact crater formation and fragmentation of ice ice-silicate mixtures wit...

2016
Kaluvapudi. Akhil M. K. M. V. Ratnam Ranga Raju

The project aims to study tensile softening behavior of fiber reinforced concrete .Concrete is very much weak in tension but by addition of randomly oriented short crimped steel fibers will change the behavior from brittle to ductile. In the present work, the steel fibers were added at the volume fraction, being 0%, 0.5%, 1%, 1.5% to the normal strength concrete and high strength concrete. The ...

Journal: :medical journal of islamic republic of iran 0
hossein farahini orthopedic surgeon and fellowship of knee and arthroscopy, rasool akramسازمان اصلی تایید شده: دانشگاه علوم پزشکی ایران (iran university of medical sciences)سازمان های دیگر: rasool akram mehdi ghorbani rasool akram general hospital.سازمان اصلی تایید شده: دانشگاه علوم پزشکی ایران (iran university of medical sciences) ehsan akbarian shahid beheshti university of medical sciences.سازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (shahid beheshti university of medical sciences)

abstract objective: the aim of this study was to evaluate the efficacy of antibiotic-loaded bone cement in controlling local infection and in regard to its physical characteristics, elastic modulus, and tensile strength in-vitro. methods: acrylic bone cement, based on polymethylmethacrylate (pmma) was mixed with the powder form of three antibiotics, i.e., gentamicin, tobramycin, and cefuroxime ...

Journal: :civil engineering infrastructures journal 0
hamidreza tavakoli babol university of technology masoud fallahtabar babol university of technology mohammad parvin babol university of technology

this paper investigated the effects of combining fibers with self-consolidating concrete (scc). 12 series of test specimens were prepared using three kinds of fibers including steel, polyphenylene sulfide (pps) and glass fibers with four different volumes fractions and one specimen without fibers as a reference sample. all plans were subjected to fresh concrete tests. for mechanical behavior of...

2016
JIQUAN LI SHAOGUANG YANG LIH-SHENG TURNG ZUOJIAN XIE SHAOFEI JIANG

Rapid heat cycle molding (RHCM) is a special molding process capable of producing molded plastic parts with high surface quality and improved weldline strength and appearance. This study investigated the influence of the weldline on the tensile strength of RHCM and conventional injection molded (CIM) components. The test specimens with and without a weldline were cut from RHCM and CIM parts for...

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