Factors Influencing Fracture Mechanism of IN718 at Cryogenic Temperature.

Reduced Fracture Toughness of Metallic Glass at Cryogenic Temperature

The effects of cryogenic temperature on the toughness of a Zr-based metallic glass are investigated. Based on three-dimensional fracture morphologies at different temperatures, the crack formation and propagation are analyzed. Through the calculation of the shear transformation zone volume, the shear modulus and bulk modulus of the metallic glass at different temperatures and the crack formatio...

MOSFET Characteristics at Cryogenic Temperature

Efficiency is a large concern in power electronics but size and weight must be taken into consideration as well. Power devices in need of thermal sinks for appropriate performance will affect both size and weight. MOSFET devices are the main components in the power electronics world because of their comparatively promising characteristics in power loss and switching performance. The objective o...

an investigation on influencing factors on tourists shopping attitude of iranian handmade carpet in isfahan

چکیده ندارد.

Hot-carrier reliability of MOSFETs at room and cryogenic temperature

Factors influencing the fracture of nickel-titanium rotary instruments.

AIM To evaluate the effect of rotational speed and the angle and radius of curvature of root canals on the fracture of two types of nickel-titanium rotary instruments: K3 and ProTaper. METHODOLOGY A total of 240 root canals of extracted human maxillary and mandibular molars were divided into two groups of 120, according to the angle of the canal curvature (group A: <30 degrees, group B: >30 d...