نتایج جستجو برای: fracture strength

تعداد نتایج: 293498  

Abdolhamid Azizi Pooya Bahrami,

In this study accumulative roll bonding (ARB) process up to 8 Cycles (equivalent strain of 6.4) at ambient temperature was used in order to improve the mechanical properties of Commercial purity titanium (CP-Ti).Several experiment has been done and Mechanical properties of specimen has been discussed. For investigating optical microscope punching and hardness test were utilized. This is the fir...

Abdolhamid Azizi Pooya Bahrami,

In this study accumulative roll bonding (ARB) process up to 8 Cycles (equivalent strain of 6.4) at ambient temperature was used in order to improve the mechanical properties of Commercial purity titanium (CP-Ti).Several experiment has been done and Mechanical properties of specimen has been discussed. For investigating optical microscope punching and hardness test were utilized. This is the fir...

Journal: :The journal of contemporary dental practice 2015
Sevinç Aktemur Türker Bahar Özçelik Zeliha Yilmaz

AIM To compare the bond strength and the fracture resistance of different post systems. MATERIALS AND METHODS Endodontically treated 60 mandibular incisor and 60 mandibular premolar teeth were used for the bond strength and fracture resistance test respectively. For each test, three groups (n = 20) were formed according to the posts used zirconia posts (ZR post), individually formed glass fib...

2010
Thomas Lang Jane A Cauley Frances Tylavsky Douglas Bauer Steven Cummings Tamara B Harris

Fatty infiltration of muscle, myosteatosis, increases with age and results in reduced muscle strength and function and increased fall risk. However, it is unknown if increased fatty infiltration of muscle predisposes to hip fracture. We measured the mean Hounsfield unit (HU) of the lean tissue within the midthigh muscle bundle (thigh muscle HU, an indicator of intramuscular fat), its cross-sect...

2014
Mohamed Ashour Ahmed Mohamed I. Ebrahim M. A. Ahmed M. I. Ebrahim

Purpose: The mechanical strength of polymethyl methacrylate (PMMA) remains far from ideal for maintaining the longevity of denture. The purpose of this study was to evaluate the effect of Zirconium oxide (ZrO2) nanofillers powder with different concentration (1.5%, 3%, 5% and 7%) on the flexural strength, fracture toughness, and hardness of heat-polymerized acrylic resin. Materials and methods:...

Journal: :Journal of the Japan Society of Precision Engineering 1960

Journal: :Proceedings of the Japan Society of Civil Engineers 1973

Journal: :Spine 2016
Kensuke Shinohara Tomoyuki Takigawa Masato Tanaka Yoshihisa Sugimoto Shinya Arataki Kentaro Yamane Noriyuki Watanabe Toshifumi Ozaki Takaaki Sarai

STUDY DESIGN Retrospective case series of one institute database. OBJECTIVE To investigate the differences in the metallic strength of rods used for implant failure in the dual growing rod technique and evaluate clinical outcomes. SUMMARY OF BACKGROUND DATA The dual growing rod technique in which implanted rods extend with the growth of the spine is a useful treatment for early onset scolio...

Journal: :European cells & materials 2013
M Mehta M Heyland D Toben G N Duda

Non-invasive assessment of fracture healing, both in clinical and animal studies, has gained favour as surrogate measure to estimate regain of mechanical function. Micro-computed tomography (µCT) parameters such as fracture callus volume and mineralisation have been used to estimate callus mechanical competence. However, no in-depth information has been reported on microstructural parameters in...

2011
Yahtyng Sheu Joseph M Zmuda Robert M Boudreau Moira A Petit Kristine E Ensrud Douglas C Bauer Christopher L Gordon Eric S Orwoll Jane A Cauley

Many fractures occur in individuals without osteoporosis defined by areal bone mineral density (aBMD). Inclusion of other aspects of skeletal strength may be useful in identifying at-risk subjects. We used surrogate measures of bone strength at the radius and tibia measured by peripheral quantitative computed tomography (pQCT) to evaluate their relationships with nonvertebral fracture risk. Fem...

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