The Study on Surface Defects on the Machined Surface in High Speed Milling of SiCp/Al Composites

2012 ◽  
Vol 426 ◽  
pp. 182-185
Author(s):  
Ming Zhou ◽  
Yang Jun Wang ◽  
Xiang Yang Jin
Keyword(s):  
High Speed ◽  
Laser Scanning ◽  
Surface Defects ◽  
Confocal Laser Scanning Microscope ◽  
Confocal Laser ◽  
Milling Machine ◽  
Scanning Microscope ◽  
Machined Surface ◽  
High Speed Milling ◽  
Geometrical Characteristics

For the purpose of investigating the surface defects on the machined surface in high speed milling of SiCp/Al Composites, the high speed milling experiments were performed on the precision milling machine (ops650).The machined surface was observed and measured by the OLS3000 Confocal Laser Scanning Microscope. The surface defects on the machined surface were classified and investigated. The surface defects mainly include grooves and holes due to the pulled-out particle. According to the geometrical characteristics of the pulled-out particles.

Study on Choice of Reference Planes for 3D Machined Surface Roughness of SiCp/Al Composites during High Speed Milling Process

2010 ◽  
Vol 150-151 ◽  
pp. 129-132 ◽  
Author(s):  
Yang Jun Wang ◽  
Ming Zhou ◽  
Yuan Jing Zhang
Keyword(s):  
High Speed ◽  
Laser Scanning ◽  
Chemical Vapour ◽  
Least Square ◽  
Confocal Laser ◽  
Machined Surface ◽  
High Speed Milling ◽  
Least Square Fitting ◽  
Fitting Method ◽  
Least Square Fitting Method

This paper presents an experimental study in high speed milling of SiCp/Al composites. Machining tests were carried out on a high speed milling machine by using chemical vapour deposition (CVD) diamond coated tools. The surface micro-topography was tested by the OLS3000 Confocal Laser Scanning Microscope. The Gaussian filtering method and the least square fitting method were used to treat the measured results. Two methods are compared according to the effect on keeping important original surface’s character. The results showed that the least square fitting method is suitable due to its good accordance to the original surface’s character.

Characterization of Fiber Pull-Outs in Drilled CFRP Holes Using Confocal Laser Microscope

2014 ◽  
Author(s):  
Xin Wang ◽  
Patrick Kwon ◽  
Ruslan Pelikhatyy ◽  
Dave (Dae-Wook) Kim
Keyword(s):  
Laser Scanning ◽  
Surface Defects ◽  
Confocal Laser Scanning Microscope ◽  
Confocal Laser ◽  
Drilling Process ◽  
Scanning Microscope ◽  
Aircraft Structure ◽  
Reinforced Plastic ◽  
Large Aircraft

Carbon Fiber Reinforced Plastic (CFRP) material is often drilled when constructing a large aircraft structure. When drilling CFRP, many defects can be left on the CFRP hole surface. One of the most detrimental surface defects is known as fiber pull-outs, which occur when bundles of fibers are pulled away by fiber-matrix de-bonding and matrix stripping. The objective of this research is to use confocal laser scanning microscope (CLSM) in order to characterize fiber pull-outs occurred during the drilling process of quasi-isotropic CFRP. This new optical characterization method is capable of measuring maximum depth and the distributions of fiber pull-outs. Fiber pull-outs are also qualitatively characterized by SEM and CLSM. It is found that the average depth of fiber pull-outs acquired from CLSM is approximately two times larger than those from the surface profilometer. However, there is a proportional correlation of the data between CLSM and surface profilometer.

3-D imaging of cells using a confocal laser scanning microscope and digital image processing

1988 ◽  
Vol 46 ◽  
pp. 96-97
Author(s):  
Thomas M. Jovin ◽  
Michel Robert-Nicoud ◽  
Donna J. Arndt-Jovin ◽  
Thorsten Schormann
Keyword(s):  
Laser Scanning ◽  
Confocal Laser Scanning Microscope ◽  
Laser Scanning Microscopy ◽  
Confocal Laser Scanning ◽  
Confocal Laser ◽  
Scanning Microscope ◽  
Laser Scanning Microscope ◽  
Biochemical Processes ◽  
Adjacent Structures

Light microscopic techniques for visualizing biomolecules and biochemical processes in situ have become indispensable in studies concerning the structural organization of supramolecular assemblies in cells and of processes during the cell cycle, transformation, differentiation, and development. Confocal laser scanning microscopy offers a number of advantages for the in situ localization and quantitation of fluorescence labeled targets and probes: (i) rejection of interfering signals emanating from out-of-focus and adjacent structures, allowing the “optical sectioning” of the specimen and 3-D reconstruction without time consuming deconvolution; (ii) increased spatial resolution; (iii) electronic control of contrast and magnification; (iv) simultanous imaging of the specimen by optical phenomena based on incident, scattered, emitted, and transmitted light; and (v) simultanous use of different fluorescent probes and types of detectors.We currently use a confocal laser scanning microscope CLSM (Zeiss, Oberkochen) equipped with 3-laser excitation (u.v - visible) and confocal optics in the fluorescence mode, as well as a computer-controlled X-Y-Z scanning stage with 0.1 μ resolution.

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