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Journal Articles
AM&P Technical Articles (2024) 182 (8): 20–23.
Published: 01 November 2024
... metallic artifacts. This article describes investigations that revealed definite evidence for SCC in ancient silver and bronze alloys and a probable case of SCC in low-carat (13K) gold. Diagnostic methods included visual inspection, metallography, and fractography. Although stress corrosion cracking...
Journal Articles
AM&P Technical Articles (2018) 176 (6): 26–29.
Published: 01 September 2018
...Samuel W. Glass, III Nondestructive evaluation comprises a large family of specific test disciplines including visual inspection, dimensional metrology, ultrasound, radiography, penetrant tests, magnetic particle tests, leak tests, eddy current tests, potential drop tests, flash...
Journal Articles
AM&P Technical Articles (2013) 171 (4): 25–28.
Published: 01 April 2013
... testing (MT) and; ultrasound testing (UT). Liquid penetrant testing infuses a surface with a light-sensitive liquid. After allowing sufficient dwell-time for penetration into surface discontinuities, the penetrant is chemically developed and visually inspected using white or fluorescent light. Because...
Journal Articles
AM&P Technical Articles (2025) 183 (1): 22–24.
Published: 01 January 2025
... microscopy visual inspection X-ray radiography 2 2 httpsdoi.org/10.31399/asm.amp.2025-01.p022 ADVANCED MATERIALS & PROCESSES | JANUARY/FEBRUARY 2025 ARCHAEOMETALLURGICAL MATERIALS CHARACTERIZATION Combinations of descriptive and analytical techniques with case studies provide essential information about...
Journal Articles
AM&P Technical Articles (2013) 171 (8): 26–28.
Published: 01 August 2013
... inspection, hydrostatic testing, and radiographic inspection. The visual appearance of a typical DSAW longitudinal seam was quite different from the ruptured pup s longitudinal seam. NTSB concluded that a simple visual inspection should have caught the deficient seam weld, thus indicating that either...
Journal Articles
AM&P Technical Articles (2015) 173 (9): 32–33.
Published: 01 October 2015
...-mm-diameter surface at the ends of the pin. Specifically, the owner of the failed pin wanted to determine if inclusions may have caused the failure, if the part had been properly heat treated, and whether or not the steel composition was correct. VISUAL INSPECTION AND SEM-EDS ANALYSIS Both visual...
Journal Articles
AM&P Technical Articles (2019) 177 (6): 18–22.
Published: 01 September 2019
... insulated generator components [patent pending], without the need to strip insulation from components to visually inspect them prior to assessing serviceability and need for repair (Fig. 6). Combinations of x-ray and gamma ray techniques were used to develop parameters necessary to complete inspection both...
Journal Articles
AM&P Technical Articles (2012) 170 (9): 24–26.
Published: 01 September 2012
... speed of 2 m/min was used for all welds. Visual inspection, radiographic testing (RT), and transverse cross sections were used to analyze weld quality. RT was performed per ASME Section V, while weldment mechanical properties and soundness were analyzed using microindentation-hardness tests, tensile...
Journal Articles
AM&P Technical Articles (2016) 174 (10): 44.
Published: 01 November 2016
... where 8%-YSZ is sprayed for 37 hours starting with a brand new set of electrons. The torch is stopped and restarted every hour. Visual inspection of the inside of the nozzle is carried out every hour and gun power is measured. Finally, particle characteristics are monitored using an online spray...
Journal Articles
AM&P Technical Articles (2015) 173 (9): 29–31.
Published: 01 October 2015
... whether an open/short defect is in the package or at the interface to the die. Other nondestructive optical tests include filtered polarized light inspection, as well as die backside inspection using reflected IR imaging. Fig. 2 Low- and high-magnification microscopes can be used to visualize a package...
Journal Articles
AM&P Technical Articles (2016) 174 (1): 18–21.
Published: 01 January 2016
... by a power bump. The machine was off for a few Fig. 5 Defects in the integral mesh of a development part. hours before the process was restarted. Visual inspection of the as-printed part reveals a dark horizontal line (Fig. 6). The build pause feature was also present near the end of the z orientation...
Journal Articles
AM&P Technical Articles (2021) 179 (6): 50–51.
Published: 01 September 2021
... to achieve DIC, meaning there is no way to reliably repeat an inspection to visualize specific flaws. Another advantage of DIC is that it can make surface variations visible that would otherwise require the use of a secondary piece of equipment, such as a laser confocal mi- 12 croscope or interferometer...
Journal Articles
AM&P Technical Articles (2024) 182 (7): 13–17.
Published: 01 October 2024
.... Fig. 11 Electrochemical potential measurement indicating graphitic corrosion. ADVANCED MATERIALS & PROCESSES | OCTOBER 2024 16 TABLE 1 CAST-IRON PIPE INSPECTION DATA Cast-iron pipe section Visual Electrochemical potential readings, V 1 Brown surface -0.13 2 Dark brown surface -0.032 2 Dark surface...
Journal Articles
AM&P Technical Articles (2017) 175 (8): 23–24.
Published: 01 November 2017
... excessive bubbling, streaking, under-curing, and discoloration. However, these are the least of our concerns. The real issue is with plastic bar and plate for CNC machining and injection-molding resins. For this, we have found the following tests to be most helpful: 1. Do a visual inspection to make sure...
Journal Articles
AM&P Technical Articles (2020) 178 (6): 16–21.
Published: 01 September 2020
... present at the time of fabrication, can grow during operation and are not easily detected visually or with other volumetric techniques such as ultrasound until they become irreparable. The ability of microwaves to penetrate nonmetallic materials could provide a new way to inspect blades and find...
Journal Articles
AM&P Technical Articles (2023) 181 (5): 31–33.
Published: 01 July 2023
...Pascal Pinter Fire risk in electric vehicle batteries can be reduced by detecting flaws through nondestructive visualization. Industrial computed tomography (CT scanning) combined with advanced software that makes sense of CT-generated images, allows users to measure voids and particle sizes within...
Journal Articles
AM&P Technical Articles (2021) 179 (1): 16–21.
Published: 01 January 2021
... measurements are combined. While LOM and SEM only enable the visual inspection of the microstructure, EBSD provides a completely different set of information, e.g., misorientation parameters or data about both grain and phase boundaries, which in the case of bainite in particular ideally complement the LOM...
Journal Articles
AM&P Technical Articles (2018) 176 (8): 38–40.
Published: 01 November 2018
... on CFRP composite via machinability test and via visual inspection of the side view of the spray profile of (c) Ag and (d) Cu. 5 TSS 40 iTSSe TSS FEATURE ADVANCED MATERIALS & PROCESSES | NOVEMBER/DECEMBER 2018 2. M. Kurokawa, Y. Uchiyama, and S. Nagai, Performance of Plastic Gear Made of Carbon Fiber...
Journal Articles
AM&P Technical Articles (2025) 183 (3): 13–18.
Published: 01 April 2025
... in these investigations, as they were older than 10 years. This process can be a fluorescent penetrant inspection, a visual method looking for cracks[14]. A branch of the FAA is compiling information on the affected part numbers, and the NTSB is working in concert with them to ensure this problem can be remediated...
Journal Articles
AM&P Technical Articles (2016) 174 (3): 46–48.
Published: 01 March 2016
... of titanium (Fig. 2). Fig. 5 Metallographic photos show that increased surface area reduces alpha case. Metallographic results show that visual inspection cannot reliably be used as an indication of alpha case. Varying the ramp rate or incorporating intermittent temperature holds did not affect the amount...