Skip Nav Destination
Close Modal
Search Results for
cleaning
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
Book Series
Date
Availability
1-20 of 408 Search Results for
cleaning
Follow your search
Access your saved searches in your account
Would you like to receive an alert when new items match your search?
Sort by
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0091318
EISBN: 978-1-62708-217-4
... the specified procedure for chemical cleaning of the tanks in preparation for potable water storage. The sodium hypochlorite sterilizing solution used was three times the prescribed strength, and the process exposed the bottom of the tanks to hypochlorite solution that had collected near the outlet...
Abstract
Two freshwater tanks (0.81 mm (0.032 in) thick, type 321 stainless steel) were removed from aircraft service because of leakage due to pitting and rusting on the bottoms of the tanks. One tank had been in service for 321 h, the other for 10 h. There had been departures from the specified procedure for chemical cleaning of the tanks in preparation for potable water storage. The sodium hypochlorite sterilizing solution used was three times the prescribed strength, and the process exposed the bottom of the tanks to hypochlorite solution that had collected near the outlet. Investigation (visual inspection, 95x unetched images, chemical testing with a 5% salt spray, chemical testing with sodium hypochlorite at three strength levels, samples were also pickled in an aqueous solution containing 15 vol% concentrated nitric acid (HNO3) and 3 vol% concentrated hydrofluoric acid (HF) and were then immersed in the three sodium hypochlorite solutions for several days) supported the conclusion that failure of the stainless steel tanks by chloride-induced pitting resulted from using an overly strong hypochlorite solution for sterilization and neglecting to rinse the tanks promptly afterward. Recommendations included revising directions for sterilization and rinsing.
Book Chapter
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0047745
EISBN: 978-1-62708-235-8
... withstood a 1035-kPa (150-psi) pressure test using tap water. All surfaces were to have been passivated according to MIL-S-5002 before assembly, but no other cleaning techniques were stipulated. Investigation The failed braze had joined a convolute bellows to a cup on the end of a tube elbow ( Fig...
Abstract
A 321 stainless steel radar coolant-system assembly fabricated by torch brazing with AWS type 3A flux, failed at the brazed joint when subjected to mild handling before installation, after being stored for about two years. It was revealed by visual examination of the failed braze that the filler metal had not covered all mating surfaces. Lack of a metallurgical bond between the brazing alloy and stainless steel and instead mechanical bonding of the filler metal to an oxide layer on the stainless steel surface was revealed by examination of the broken joint at the cup. It was indicated by the thickness of the oxide layer that the steel surface was not protected from oxidation by the flux during torch heating. It was concluded that the failure was caused by lack of a metallurgical bond between the brazing alloy and the stainless steel. Components made of 347 stainless steel (better brazeability) brazed with a larger torch tip (wider heat distribution) and AWS type 3B flux (better filler-metal flow) were recommended for radar coolant-system assembly.
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0047956
EISBN: 978-1-62708-235-8
... prior to which the bearings were ultrasonically cleaned in trichloroethylene to ensure extreme cleanness. Equally spaced indentations resembling true brinelling were revealed by careful examination of the bearing raceways. It was concluded that the ultrasonic energy transmitted to the balls brinelled...
Abstract
Randomly selected dictating-machine drive mechanisms, which contained small ball bearings, were found to exhibit unacceptable fluctuations in drive output during the early stages of production. It was indicated that the bearing raceways were being true brinelled before or during installation of the bearings. The preinstallation practices and the procedures for installing the bearings were carefully studied. It was revealed that during one preinstallation step, the lubricant applied by the bearing manufacturer was removed and the bearing was relubricated with another type of lubricant prior to which the bearings were ultrasonically cleaned in trichloroethylene to ensure extreme cleanness. Equally spaced indentations resembling true brinelling were revealed by careful examination of the bearing raceways. It was concluded that the ultrasonic energy transmitted to the balls brinelled the raceways enough to cause fluctuations in machine output. Solvent-vapor cleaning was employed as a corrective technique for removing bearing lubricant.
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001841
EISBN: 978-1-62708-241-9
... preservation, the fracture surface was not cleaned Fig. 5 Higher magnification SEM image of guide wire fracture showing beach marks consistent with fatigue crack growth Fig. 9 Finite Element model of subject stainless steel stent Fig. 10 Fracture observed at crown–strut interface...
Abstract
Ultrasonic cleaning is widely used in the production of medical devices such as guide wires and vascular implants. There are many cases, however, where cleaning frequencies have been close to the natural frequency of the device, producing resonant vibrations large enough to cause damage or premature failure. Several cases of ultrasonic cleaning-induced fatigue and corresponding failures of medical devices are examined in this review. Preventative measures to ensure that ultrasonic cleaning frequencies do not pose a threat are also provided.
Image
in Metallographic Examination of Microbiologically Influenced Corrosion in a Fire Truck Water Tank
> ASM Failure Analysis Case Histories: Automobiles and Trucks
Published: 01 June 2019
Fig. 5 Heat affected zone of seam weld after brush cleaning (original magnification was 8×)
More
Image
in Pressure Vessel from a High-Pressure Vibratory Autoclave Burst by Explosion
> ASM Failure Analysis Case Histories: Chemical Processing Equipment
Published: 01 June 2019
Fig. 2 Part of the cracked zone after cleaning. 10 ×
More
Image
in Fatigue Failure of a Steel Wire Rope Resulting From Shock Loading
> ASM Failure Analysis Case Histories: Material Handling Equipment
Published: 01 June 2019
Fig. 1 Steel wire rope, used on a cleaning-line crane, that failed from fatigue resulting from vibration caused by shock loading. (a) Section of the wire rope adjacent to the fracture. Approximately 1 1 2 ×. (b) Unetched longitudinal section of a wire from the rope showing fatigue
More
Image
in Failure in Aircraft Parts Made of Ultra-High-Strength Steel
> ASM Failure Analysis Case Histories: Air and Spacecraft
Published: 01 June 2019
Fig. 13 Fracture surface (after cleaning) in origin area indicated in Fig. 12 . Arrow “a” indicates the subsurface nucleus and arrows “b” and “c” indicate crack-front markings. ×5.
More
Image
Published: 01 December 2019
Fig. 4 Mating shaft fracture surfaces after ultrasonic cleaning. Arrows denote initiation location.
More
Image
in Failures of Structures and Components by Metal-Induced Embrittlement
> Handbook of Case Histories in Failure Analysis
Published: 01 December 2019
Fig. 15 Macroscopic view of failed valve after dismantling and partial cleaning, showing fracture through the outside wall of the housing near the crimped end
More
Image
in Failure Analysis of Railroad Components
> Analysis and Prevention of Component and Equipment Failures
Published: 30 August 2021
Fig. 18 Failed journal after cleaning at initiation site, with mechanical damage present
More
Image
in Failure Analysis of Railroad Components
> Analysis and Prevention of Component and Equipment Failures
Published: 30 August 2021
Fig. 19 Failed journal after cleaning. Pitting is visibly present near the initiation region
More
Image
in Failure Analysis of Railroad Components
> Analysis and Prevention of Component and Equipment Failures
Published: 30 August 2021
Fig. 20 Mate journal after cleaning, with pitting present in the fillet region
More
Image
in Fracture of a Train Wheel Due to Thermally Induced Fatigue and Residual Stress
> Handbook of Case Histories in Failure Analysis
Published: 01 December 1993
Fig. 2 Fracture surface shwon in Fig. 1 after cleaning. Fracture initiated in the flange and propagated across the rim, plate, and hub.
More
Image
Published: 01 December 1993
Fig. 5 SEM micrograph showing region of fast fracture before cleaning
More
Image
Published: 01 December 1993
Fig. 6 SEM micrograph showing region of fast fracture after cleaning with orthophosphoric acid
More
Image
in Fatigue Failure of a Circulating Water Pump Shaft
> Handbook of Case Histories in Failure Analysis
Published: 01 December 1993
Fig. 4 SEM micrographs of the fracture surface after cleaning. (a) and (b) Views at increasing magnification of the crack origin area of sample A (c) Transition in fracture morphology between the intergranular fracture of the origin area (bottom) and the fatigue zone (top)
More
Image
in Fatigue Failure of a Circulating Water Pump Shaft
> Handbook of Case Histories in Failure Analysis
Published: 01 December 1993
Fig. 5 SEM micrographs of the machined cylindrical surface after cleaning. (a) Sample B: overview of the fracture surface (FS) intersecting the machined surface, showing localized pitting. (b) Sample A: overview of the machined surface, showing pitting, intergranular attack, and secondary
More
Image
in Corrosion Fatigue Failure of Stainless Steel Load Cells in a Milk Storage Tank
> Handbook of Case Histories in Failure Analysis
Published: 01 December 1993
Fig. 6 Fracture origin (top left corner) and fatigue region after cleaning in inhibited acid
More
Image
in Cracking of Aluminum Alloy Aircraft Undercarriage Forgings
> Handbook of Case Histories in Failure Analysis
Published: 01 December 1992
Fig. 6 Part 3 after cleaning, showing cracks in greater detail. ∼0.94×.
More