A New Method of Studying the Performance of Grinding Wheels

1980 ◽  
Vol 102 (1) ◽  
pp. 80-84 ◽  
Author(s):  
K. V. Kumar ◽  
M. Cozminca ◽  
Y. Tanaka ◽  
M. C. Shaw

A new technique for studying the performance of abrasive tools is described that is not only useful for evaluating the rate of wear of grinding systems but is also capable of yielding difficult to obtain data (such as the effective number of cutting points and local wheel work deflection) essential in fundamental studies of grinding. The new method involves overcut fly cutting with a small (1/8 in × 1/8 in) cluster of abrasive grains that are normally bound together and dressed. The small size of the specimen is particularly important relative to wear studies in that it enables wear data to be obtained with a relatively small amount of grinding and also permits the used abrasive to be studied in the scanning electron microscope.

1988 ◽  
Vol 7 (1) ◽  
pp. 53-57 ◽  
Author(s):  
Liam T. Gallagher

Abstract. A new technique for viewing the same nannofossil specimen under the light microscope and scanning electron microscope is described, in which standard preparation materials are used. The applications of this, and previous techniques, are discussed as well as the relevance of these to the elucidation of taxonomic problems.


2007 ◽  
Vol 121-123 ◽  
pp. 739-742 ◽  
Author(s):  
H.M. Chi ◽  
Z.D. Xiao ◽  
Xin Xing Xiao

Weng`an fauna in Guizhou, China provides a unique window for the evolution of the early life especially since the animal embryos and sponge is found there. Phosphatization makes the fossils preserve in details including cells and subcellular structure. Here we use atomic force microscope observing the surface of some three dimensional preserved embryo fossils and the ultra membrane-like structure is found under atomic force microscope (AFM) while such structure can`t be found under scanning electron microscope (SEM). The membrane-like structure is approximately 10nm in thickness which maybe one part of the fossil embryos or belong to another nano scale microfossils. Therefore, AFM provides a new method for the study of the ultra structure of the microfossils from Weng`an fauna.


2011 ◽  
Vol 415-417 ◽  
pp. 1899-1902
Author(s):  
Yi Guo Zhu ◽  
Wen Mao

A new method to prepare NiTi thin film with two separate targets is presented. In this technology, two pure Ni target and pure Ti target are fixed and the substrate is rotating. The final thin film structure is analyzed by Scanning Electron Microscope. Results show that there is no layer structure in the film; the sputtering power and the substrate temperature have great influence to the morphology of the film; all the grain pattern are column under different technological parameters.


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