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optical profilometry

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Published: 01 August 2018
Fig. 29 Laser ultrasonic inspection of an automotive suspension frame fillet weld. (a) Laser ultrasonic image combined with optical profilometry of the bead surface. (b) Metallographic image obtained after sectioning the weld with results (superimposed in red and yellow) derived from More
Image
Published: 31 December 2017
Fig. 1 Liquid impingement erosion on the leading edge of a blade, caused by droplets of rain. (a) Scanning electron microscopy image showing a section cut from an ex-service blade. (b) Optical profilometry image. Normally, such erosion does not impair the function of the blade. More
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006402
EISBN: 978-1-62708-192-4
... the surface Gas adsorption at surface (+ Auger electron spectroscopy, reflection high-energy electron diffraction) RBS Rutherford backscattering spectroscopy Ion beam Scattered ion Vibration condition >100 µm Analysis of slip products, thin-film density OPM Optical profilometry Light (laser...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006460
EISBN: 978-1-62708-190-0
...-array by numerical processing of an array of previously acquired laser-ultrasonic signals. The article describes the ultrasound generation by thermoelastic mechanism and ablation or vaporization. It illustrates the principle of optical detection of ultrasound with confocal Fabry-Perot interferometer...
Series: ASM Handbook
Volume: 24A
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.hb.v24A.a0006988
EISBN: 978-1-62708-439-0
... techniques: 3D optical profilometry of the surface and x-ray micro-CT of the entire volume ( Fig. 6 ). The solid domain of the model was treated as an isotropic homogeneous material. Cyclic loading for a limited number of loading cycles was simulated using finite-element analysis, and a nonlocal fatigue...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001295
EISBN: 978-1-62708-170-2
... Abstract Measuring the thickness of thin films can be accomplished in many ways. This article focuses on the optical method of single-wavelength ellipsometry, two multiple-wavelength methods of reflectometry and spectroscopic ellipsometry for measuring the thickness of thin films. The general...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003536
EISBN: 978-1-62708-180-1
... that are based on fracture profilometry. This is followed by a section describing the methods based on scanning electron microscope fractography. The article also addresses procedures for three-dimensional fracture surface reconstruction. In each case, sufficient methodological details, governing equations...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006671
EISBN: 978-1-62708-213-6
... resistant to failure a ceramic will be. Usually, a fine finish also gives lower friction forces and lower material wear. Surface roughness is often determined by profilometry, optical microscopy, or SEM. Testing A wide variety of mechanical strength tests are used for ceramics, but the most common...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006670
EISBN: 978-1-62708-213-6
... consist of a mix of amorphous and polycrystalline domains; properties of these thin films are commonly characterized using electrical, optical, and surface scanning probe-based techniques. Low-dimensional semiconductors are materials and structures with at least one critical dimension that is within...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003282
EISBN: 978-1-62708-176-4
... devices because scratch formation can be directly observed in these devices, in situ, using an optical or a scanning electron microscope (SEM). The indenter is stationary, and the sample is slid at a very low velocity by mounting it on a linear slide. In the device, which is mounted inside the chamber...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006378
EISBN: 978-1-62708-192-4
... on the leading edge of a blade, caused by droplets of rain. (a) Scanning electron microscopy image showing a section cut from an ex-service blade. (b) Optical profilometry image. Normally, such erosion does not impair the function of the blade. A very comprehensive treatment and review of liquid impact...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003285
EISBN: 978-1-62708-176-4
... small amplitude. The article also reviews the fretting rig for investigating fretting wear. sliding contact surface damage statistical analysis adhesive wear galling testing button-on-block galling test pin-on-flat galling test threaded connection galling test fretting wear profilometry...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006432
EISBN: 978-1-62708-192-4
... either by weighing or dimensional analysis (e.g., tactile or optical profilometry), give direct access to the loss of material or volume. Unfortunately, no information is gained about the transient wear behavior. Reassembly of the component for further testing is limited by the fact that reassembling...
Series: ASM Handbook
Volume: 23A
Publisher: ASM International
Published: 12 September 2022
DOI: 10.31399/asm.hb.v23A.a0006890
EISBN: 978-1-62708-392-8
... as: Surface scanning . This first step consists of obtaining a 3D model of the defect on which it is intended to bioprint. This scanning process can be achieved in different ways, for example, by using touch probes or optical scanners or by segmenting the defect surface directly from preoperative volumetric...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001298
EISBN: 978-1-62708-170-2
... on one side. This value can be measured optically by interferometry or microstylus profilometry. Figure 1(b) shows a typical interferometry apparatus setup. Either technique measures deflection at the same position, across a diameter of the disk, both before and after coating deposition. The stress...
Series: ASM Handbook
Volume: 24A
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.hb.v24A.a0007023
EISBN: 978-1-62708-439-0
... in laser powder-bed fusion/directed-energy deposition. IR, infrared; CMM, coordinate measuring machine; GOM, 3D inspection software The table shows that the methods are predominantly based on infrared or high-speed camera and optical technologies with thermal systems monitoring temperature gradients...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005677
EISBN: 978-1-62708-198-6
... by profilometry and laser reflection techniques, which both indicate that amalgam wears about 10 times more rapidly than gold alloys under the same conditions of simulated brushing with normal dentifrices ( Ref 84 ). Clinical Studies The physiologic wear rates of amalgam are 6 to 15 μm/year in contact-free...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005668
EISBN: 978-1-62708-198-6
... a flat disk), it is relatively easy to measure a profile across the wear track using a profilometer (either stylus or optical), from which the area of the wear track section can be calculated. The volume of material lost is then calculated by multiplying the area by the circumference of the wear track...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005729
EISBN: 978-1-62708-171-9
... Abstract Metallographic examination is a critical step in the assessment of thermal spray coating characteristics. This article discusses the major steps involved in metallographic examination: sectioning, mounting, grinding, polishing, optical microscopy, and image analysis. It provides...
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001774
EISBN: 978-1-62708-178-8
... rate is determined for a given set of operating conditions and the material of interest by measuring the depth of the sputtered crater. The crater depth can be measured using optical interferometry or profilometry. When appropriate, the sputter rate can also be obtained by depth profiling films...