scholarly journals Study on Chip Breakability Index During Longitudinal Turning of Cast and DMLS Additively Manufactured AlSi10Mg Aluminum Alloy

2022 ◽  
Vol 16 (1) ◽  
pp. 28-35
Author(s):  
Grzegorz Struzikiewicz ◽  
Bogdan Słodki ◽  
Wojciech Zębala ◽  
Emilia Franczyk
2014 ◽  
Vol 685 ◽  
pp. 90-93
Author(s):  
Zhong Liang Wu ◽  
Jie Zhao ◽  
Yan Lin Wang

Chip breaking is important during manufacturing processes. A method of chip breaking is described. Common high speed tool was selected as cutting tool. The convex stripe was made by the laser instrument on the rake of cutting tool. Cutting experiments of aluminum alloy were carried out with this kind of tools. Experimental results show that chip breaking of tools with convex stripe is easier than ordinary tools. And the chip shape is always arc. The chip created by tools with convex stripe breaks more easily when cutting depth is less than 0.5mm. There is no damage on cutting tool with this method which is simple for manufacture.


2021 ◽  
Author(s):  
M. S. Ahmad Yasir ◽  
M. Z. A. Yazid ◽  
M. Z. A. Khairul Azreen ◽  
Z. Karim ◽  
Gusri Akhyar Ibrahim

Author(s):  
G. G. Shaw

The morphology and composition of the fiber-matrix interface can best be studied by transmission electron microscopy and electron diffraction. For some composites satisfactory samples can be prepared by electropolishing. For others such as aluminum alloy-boron composites ion erosion is necessary.When one wishes to examine a specimen with the electron beam perpendicular to the fiber, preparation is as follows: A 1/8 in. disk is cut from the sample with a cylindrical tool by spark machining. Thin slices, 5 mils thick, containing one row of fibers, are then, spark-machined from the disk. After spark machining, the slice is carefully polished with diamond paste until the row of fibers is exposed on each side, as shown in Figure 1.In the case where examination is desired with the electron beam parallel to the fiber, preparation is as follows: Experimental composites are usually 50 mils or less in thickness so an auxiliary holder is necessary during ion milling and for easy transfer to the electron microscope. This holder is pure aluminum sheet, 3 mils thick.


2020 ◽  
Vol 477 (14) ◽  
pp. 2679-2696
Author(s):  
Riddhi Trivedi ◽  
Kalyani Barve

The intestinal microbial flora has risen to be one of the important etiological factors in the development of diseases like colorectal cancer, obesity, diabetes, inflammatory bowel disease, anxiety and Parkinson's. The emergence of the association between bacterial flora and lungs led to the discovery of the gut–lung axis. Dysbiosis of several species of colonic bacteria such as Firmicutes and Bacteroidetes and transfer of these bacteria from gut to lungs via lymphatic and systemic circulation are associated with several respiratory diseases such as lung cancer, asthma, tuberculosis, cystic fibrosis, etc. Current therapies for dysbiosis include use of probiotics, prebiotics and synbiotics to restore the balance between various species of beneficial bacteria. Various approaches like nanotechnology and microencapsulation have been explored to increase the permeability and viability of probiotics in the body. The need of the day is comprehensive study of mechanisms behind dysbiosis, translocation of microbiota from gut to lung through various channels and new technology for evaluating treatment to correct this dysbiosis which in turn can be used to manage various respiratory diseases. Microfluidics and organ on chip model are emerging technologies that can satisfy these needs. This review gives an overview of colonic commensals in lung pathology and novel systems that help in alleviating symptoms of lung diseases. We have also hypothesized new models to help in understanding bacterial pathways involved in the gut–lung axis as well as act as a futuristic approach in finding treatment of respiratory diseases caused by dysbiosis.


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