Skip Nav Destination
Close Modal
Search Results for
visual inspection
Update search
Filter
- Title
- Authors
- Author Affiliations
- Full Text
- Abstract
- Keywords
- DOI
- ISBN
- EISBN
- Issue
- ISSN
- EISSN
- Volume
- References
Filter
- Title
- Authors
- Author Affiliations
- Full Text
- Abstract
- Keywords
- DOI
- ISBN
- EISBN
- Issue
- ISSN
- EISSN
- Volume
- References
Filter
- Title
- Authors
- Author Affiliations
- Full Text
- Abstract
- Keywords
- DOI
- ISBN
- EISBN
- Issue
- ISSN
- EISSN
- Volume
- References
Filter
- Title
- Authors
- Author Affiliations
- Full Text
- Abstract
- Keywords
- DOI
- ISBN
- EISBN
- Issue
- ISSN
- EISSN
- Volume
- References
Filter
- Title
- Authors
- Author Affiliations
- Full Text
- Abstract
- Keywords
- DOI
- ISBN
- EISBN
- Issue
- ISSN
- EISSN
- Volume
- References
Filter
- Title
- Authors
- Author Affiliations
- Full Text
- Abstract
- Keywords
- DOI
- ISBN
- EISBN
- Issue
- ISSN
- EISSN
- Volume
- References
NARROW
Format
Topics
Journal
Article Type
Date
Availability
1-20 of 54
Search Results for visual inspection
Follow your search
Access your saved searches in your account
Would you like to receive an alert when new items match your search?
1
Sort by
Journal Articles
Stress Corrosion Cracking: A Brief Historical Snapshot of an Age-Old Problem
Available to Purchase
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...
Abstract
View articletitled, Stress Corrosion Cracking: A Brief Historical Snapshot of an Age-Old Problem
View
PDF
for article titled, Stress Corrosion Cracking: A Brief Historical Snapshot of an Age-Old Problem
Although stress corrosion cracking (SCC) accounts for just a fraction of all engineering failures, its prevention is a major problem, particularly in the aerospace industry. Recent archaeometallurgical studies show that stress corrosion cracking occurred in ancient 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.
Journal Articles
A Noncomprehensive Guide to Nondestructive Evaluation
Available to Purchase
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...
Abstract
View articletitled, A Noncomprehensive Guide to Nondestructive Evaluation
View
PDF
for article titled, A Noncomprehensive Guide to Nondestructive Evaluation
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 and vibrothermography, shearography, acoustic emissions, and many other methods. This article offers an overview of NDE science and discusses some key considerations for choosing specific techniques.
Journal Articles
Eddy Current Testing: Higher Throughput, Smaller Flaw Detection, Greater Precision, and More Cost-Efficient NDT
Available to Purchase
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...
Abstract
View articletitled, Eddy Current Testing: Higher Throughput, Smaller Flaw Detection, Greater Precision, and More Cost-Efficient NDT
View
PDF
for article titled, Eddy Current Testing: Higher Throughput, Smaller Flaw Detection, Greater Precision, and More Cost-Efficient NDT
Tie bolts used in aircraft wheels take the brunt of landing forces and are also heavily loaded during takeoff and taxiing. Because tie-bolt failures typically originate as small cracks either in the root of a bolt thread or where the bolt head joins the shank, early detection of cracks in those areas is essential. This article compares and contrasts nondestructive test methods that have been to inspect aircraft tie bolts, including liquid penetrant, magnetic particle, ultrasonic, and eddy current testing.
Journal Articles
Archaeometallurgical Materials Characterization
Available to Purchase
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...
Abstract
View articletitled, Archaeometallurgical Materials Characterization
View
PDF
for article titled, Archaeometallurgical Materials Characterization
This article summarizes the more common analytical techniques for studying ancient metal artifacts, illustrated by case histories. There are two main classifications: noninvasive and invasive techniques. This distinction is of prime importance because some heritage objects may be too rare or valuable for invasive sampling, or there may be ethical objections to certain types of examination. Noninvasive examination of ancient metal artifacts is important, yet it cannot provide the detailed information obtainable from invasive techniques. This is especially true when artifacts contain “hidden” damage and there is also a need for accurate quantitative analyses.
Journal Articles
Failure Analysis of a Natural Gas Pipeline Rupture
Available to Purchase
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...
Abstract
View articletitled, Failure Analysis of a Natural Gas Pipeline Rupture
View
PDF
for article titled, Failure Analysis of a Natural Gas Pipeline Rupture
This article describes the investigation conducted by the National Transportation Safety Board following an explosion triggered by a natural gas pipeline rupture. In addition to determining the likely cause of the rupture, the NTSB issued safety recommendations calling for hydrostatic pressure testing of similar gas lines and making them more amenable to inline inspection methods.
Journal Articles
Failure Analysis of a Fractured Pin
Available to Purchase
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...
Abstract
View articletitled, Failure Analysis of a Fractured Pin
View
PDF
for article titled, Failure Analysis of a Fractured Pin
A pin used to hold the side plates together in a conveyor chain system fractured and failed, prompting a metallurgical failure analysis. This case study reviews the analytical steps and conclusions from the study of the failed pin.
Journal Articles
NDE of Electrical Generators using Radiographic Inspection
Available to Purchase
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...
Abstract
View articletitled, NDE of Electrical Generators using Radiographic <span class="search-highlight">Inspection</span>
View
PDF
for article titled, NDE of Electrical Generators using Radiographic <span class="search-highlight">Inspection</span>
Use of radiography to inspect insulated generator components without the need to strip insulation offers advantages over other inspection methods to assess serviceability and need for repair. This article outlines some of the considerations involved in using nondestructive radiography techniques to assess component integrity.
Journal Articles
Influence of Shielding Gas on Properties of High-Brightness Laser Welds
Available to Purchase
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...
Abstract
View articletitled, Influence of Shielding Gas on Properties of High-Brightness Laser Welds
View
PDF
for article titled, Influence of Shielding Gas on Properties of High-Brightness Laser Welds
This article describes how shielding gas composition, either argon or nitrogen, affects the hardness, tensile strength, and toughness of high-power, high-brightness laser welds made on various base materials, including A508 forging steel, 316L stainless steel, Inconel 690, and solution-annealed IN718.
Journal Articles
Online Diagnostic Tools Improve Thermal Spray Process
Available to Purchase
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...
Abstract
View articletitled, Online Diagnostic Tools Improve Thermal Spray Process
View
PDF
for article titled, Online Diagnostic Tools Improve Thermal Spray Process
This case study addresses the use of online diagnostic tools to adjust spray parameters to ensure consistent results.
Journal Articles
Solving Electronic System Failures in Aerospace Applications
Available to Purchase
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...
Abstract
View articletitled, Solving Electronic System Failures in Aerospace Applications
View
PDF
for article titled, Solving Electronic System Failures in Aerospace Applications
Determining the root cause of avionics failures requires a disciplined and systematic analytical process supported by sophisticated equipment. This article reviews some of the analytical tools and techniques used to understand and prevent avionics failures.
Journal Articles
NASA's Orion Crew Vehicle Sports 3D-Printed Vents
Available to Purchase
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...
Abstract
View articletitled, NASA's Orion Crew Vehicle Sports 3D-Printed Vents
View
PDF
for article titled, NASA's Orion Crew Vehicle Sports 3D-Printed Vents
Orion’s Exploration Flight Test 1 vehicle used four additively manufactured vent assemblies to equalize pressure between unpressurized portions of the spacecraft and the external environment.
Journal Articles
Detecting Flaws in Aluminum-Alloy Parts
Available to Purchase
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...
Abstract
View articletitled, Detecting Flaws in Aluminum-Alloy Parts
View
PDF
for article titled, Detecting Flaws in Aluminum-Alloy Parts
A microscope using differential interference contrast inspects grains and inclusions on heat treated aluminum parts to help predict the performance of the metal.
Journal Articles
NDT Technique to Check Graphitization of Ductile and Cast-Iron Water Mains
Available to Purchase
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...
Abstract
View articletitled, NDT Technique to Check Graphitization of Ductile and Cast-Iron Water Mains
View
PDF
for article titled, NDT Technique to Check Graphitization of Ductile and Cast-Iron Water Mains
An advanced, patented probe sensor provides early detection of water infrastructure problems caused by corrosion and harsh atmospheric conditions. Designed to detect graphitization in active pipelines, it identifies areas at risk of major failures early on. By using indirect methods like GIS mapping, in-situ soil resistivity testing, and structure-to-soil potential measurements, high-risk zones can be pinpointed. Once these areas are identified, the probe assesses the severity and depth of graphitization, providing a comprehensive evaluation of the pipeline’s condition. This allows for the implementation of effective corrosion management strategies, including cathodic protection systems, to prevent critical failures. This article describes the sensor system and provides a case study of its use. The technology received the 2024 Engineering Materials Achievement Award from ASM International.
Journal Articles
Trust But Verify
Available to Purchase
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...
Abstract
View articletitled, Trust But Verify
View
PDF
for article titled, Trust But Verify
With today’s sophisticated measurement technology and testing equipment, manufacturers need never be in doubt over the quality of their starting materials and any property changes that occur in process. This interview addresses some of the key processes and technologies used to verify material stocks.
Journal Articles
Microwave NDT Inspection Techniques for Power Generation and Specialty Applications
Available to Purchase
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...
Abstract
View articletitled, Microwave NDT <span class="search-highlight">Inspection</span> Techniques for Power Generation and Specialty Applications
View
PDF
for article titled, Microwave NDT <span class="search-highlight">Inspection</span> Techniques for Power Generation and Specialty Applications
Increasing use of nonmetallic materials in wind turbine blades is driving the development of nondestructive microwave test methods.
Journal Articles
Keeping EV Lithium-Ion Batteries "Green" With CT-Scan Data Analysis
Available to Purchase
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...
Abstract
View articletitled, Keeping EV Lithium-Ion Batteries "Green" With CT-Scan Data Analysis
View
PDF
for article titled, Keeping EV Lithium-Ion Batteries "Green" With CT-Scan Data Analysis
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 electrode active material during the research and development phase, detect delamination and contamination during cell manufacturing, analyze electrical connections and electrolyte fill levels, and provide many other quality-assurance functions that were once impractical or even impossible to perform.
Journal Articles
Machine Learning for Microstructure Classification: How to Assign the Ground Truth in the Most Objective Way
Available to Purchase
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...
Abstract
View articletitled, Machine Learning for Microstructure Classification: How to Assign the Ground Truth in the Most Objective Way
View
PDF
for article titled, Machine Learning for Microstructure Classification: How to Assign the Ground Truth in the Most Objective Way
This article demonstrates the application of machine learning to the classification and segmentation of bainitic microstructures and compares three approaches for assigning the ground truth: correlative microscopy using EBSD as an additional information source, comparison with images obtained from specially produced reference samples, and unsupervised learning.
Journal Articles
Connecting Polymers and Metals Using Cold Gas Spray
Available to Purchase
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...
Abstract
View articletitled, Connecting Polymers and Metals Using Cold Gas Spray
View
PDF
for article titled, Connecting Polymers and Metals Using Cold Gas Spray
Coating development using cold gas spray technology demonstrates the feasibility of bonding polymers to metal substrates and metals to polymer composite substrates with good adhesion. The examples addressed are polyetheretherketone (PEEK) coatings on steel and aluminum substrates and metallic coatings on carbon fiber reinforced polymer (CFRP) composites.
Journal Articles
Review of NTSB Investigations of Cessna 210 Hydraulic Actuator Fractures from Fatigue
Available to Purchase
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...
Abstract
View articletitled, Review of NTSB Investigations of Cessna 210 Hydraulic Actuator Fractures from Fatigue
View
PDF
for article titled, Review of NTSB Investigations of Cessna 210 Hydraulic Actuator Fractures from Fatigue
The article reviews National Transportation Safety Board (NTSB) investigations into multiple Cessna 210 aircraft accidents caused by failed hydraulic actuators in the main landing gear systems. Investigators discovered a pattern of fatigue cracks in 7075-T6 aluminum actuator barrels that initiated at corrosion pits along the retaining ring groove, propagated under cyclic loading, and eventually resulted in circumferential and longitudinal fractures that leaked hydraulic fluid. Although these failures have not yet caused significant injuries, they present serious safety risks by impairing pilots' ability to fully extend and lock the landing gear. The article details the metallurgical examinations that revealed multiple crack initiation sites containing chlorine-rich aluminum oxide pits, some with cadmium remnants from the adjacent steel retainer ring, suggesting potential corrosion mechanisms. The researchers conclude that the combination of thin-walled design, stress concentrations at the retaining ring groove, susceptibility of the high-strength aluminum alloy to corrosion, and possibly inadequate inspection procedures all contributed to these premature failures, prompting ongoing work with the FAA to address the issue.
Journal Articles
Minimizing Alpha Case During Vacuum Furnace Heat Treating
Available to Purchase
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...
Abstract
View articletitled, Minimizing Alpha Case During Vacuum Furnace Heat Treating
View
PDF
for article titled, Minimizing Alpha Case During Vacuum Furnace Heat Treating
Understanding detrimental alpha case formation during heat treatment of titanium parts is increasingly important as titanium use in aerospace and medical applications continues to grow.
1