The granite stone is the most widely used in the construction and granite slurry is generated through cutting and polishing of the stone. Granite slurry is waste material consisting of very fine powder and creats disposal and environmental problems in worldwide today. Disposal of granite waste leads to health hazards like respiratory and allergy problems to the people around. It also causes the...

The dynamic response mechanism of the rock fragmentation and its influential factors by TBM disc cutter are studied in this paper. Firstly, a dynamic response model is established based on the fracture mechanics and finite element theory. Secondly, a fragmentation rule is founded according to the dynamic response model, and then numerical simulations for dynamic response of rock are carried out...

Owing to high specific strength and designability, unidirectional carbon fiber reinforced polymer (UD-CFRP) has been utilized in numerous fields to replace conventional metal materials. Post machining processes are always required for UD-CFRP to achieve dimensional tolerance and assembly specifications. Due to inhomogeneity and anisotropy, UD-CFRP differs greatly from metal materials in machini...

FATIGUE BEHAVIOR AND MICROSTRUCTURE EXAMINATIONOFAISI D2 TRIM DIESbyXINCHEN WANGDecember 2013Advisor: Dr. Xin WuMajor: Mechanical EngineeringDegree: Master of ScienceAISI D2 steels are widely used as tools for forming, drawing and trimming diesdue to its high wear resistance, high compressive strength and low distortion, and itsperformance as a tr...

This paper describes a novel technique for joining similar and dissimilar metal foils, namely micro clinching with cutting by laser shock forming. A series of experiments were conducted to study the deformation behavior of single layer material, during which many important process parameters were determined. The process window of the 1060 pure aluminum foils and annealed copper foils produced b...

We compared, under laboratory conditions, the resistance to cutting out of the AO dynamic hip screw and the Pugh sliding nail. The mean load at cut out, adjusted for bone strength, was 70% greater for the Pugh sliding nail. The reasons for this difference are discussed.

Prolonged weightlessness results in a weakening of the heart, a loss of skeletal muscle strength and volume, and decreased bone density. At this time, the only effective treatment for these problems is in-flight exercise. The basic unit of exercise is a single twitch contraction of one Òmotor unitÓ. If spinal cord excitability (SCE) is reduced during space flight, this would hinder motor unit r...

Integral production of the thermoplastic parts with complicated geometric shapes by the processes such as injection molding and extrusion is not economical. It is better to divide the final shape into more simple parts and after production join them by an appropriate welding process. This research aims to study the tensile strength and toughness energy of high- density polyethylene parts which ...