نتایج جستجو برای: fracture mechanism

تعداد نتایج: 656032  

In this research the role of alloying elements on the microstructure and mechanical properties of an as cast and hot rolled high strength low alloy (HSLA) steel was studied. Different compositions with different amount of copper in the presence of nickel, hot rolled and quenched in oil. Tensile test, hardness test, scanning electron microscope (SEM) and optical microscope (OM) were used to eval...

B. Niroumand F. Ashrafizadeh F. Barlat N. Saeidi,

In the present research, damage mechanisms during room temperature uniaxial tensile testing of two different modern high strength dual phase steels,DP780 and DP980, were studied. Detailed microstructural characterization of the strained and sectioned samples was performed by scanning electron microscopy (SEM). The results revealed that interface decohesion, especially at the triple junctions of...

Journal: :Soft matter 2014
Takamasa Sakai Yuki Akagi Shinji Kondo Ungil Chung

Recently, polymer gels have drawn much attention as scaffolds for regenerative medicines, soft actuators, and functional membranes. These applications need tough and robust polymer gels as represented by the double network gels. To fully understand this mechanism and develop further advanced polymer gels, we need to fully understand the molecular origin of fracture energy for conventional polym...

2012
Douglas W Kelly Brian D Kelly

INTRODUCTION Most elderly hip fractures are the result of a ground level fall. Defining high risk falls and fracture mechanisms are important to develop successful hip fracture prevention programs. This case series presents a previously unreported diagnostic sign and for the first time documents a hip fracture mechanism for a knee impact injury from a ground level fall in two elderly patients. ...

Journal: :International journal of oral and maxillofacial surgery 2008
D H Duan Y Zhang

Previous studies have shown that impacted mandibular third molars (M3s) increase the risk of mandibular angle fractures and decrease the risk of mandibular condylar fractures. This study attempted to verify these relationships and identify the influence of mechanism and cause of injury. The incidence of fractures was compared in 700 patients with and without impacted M3s. The results showed tha...

2004
Yun-Woo Chang Hyung-Jin Shin Jae Min Cho Hye Won Chung

complication of skull fracture, occurring almost exclusively in infants and children under the age of three (1, 2). It follows head trauma with accompanying skull fracture. Dural tear associated with skull fracture is the basic mechanism by which this condition occurs. Growing skull fracture is most commonly observed in the frontal and parietal regions, but it can occur anywhere in the skull (3...

Journal: :Transactions of the Japan Society of Mechanical Engineers 1978

Journal: :Journal of the Mining and Metallurgical Institute of Japan 1973

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