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Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001276
EISBN: 978-1-62708-215-0
... Piping Turbulent flow Wall thickness Carbon steel Erosive wear Velocity-affected corrosion Erosion - corrosion Background Wall thinning and leaking were plaguing the feedwater piping in a waste-to energy plant ( Fig. 1 ). Following the initial leaks, the piping was analyzed by the boiler...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003567
EISBN: 978-1-62708-180-1
.... Design of Pumps, Valves, and Elbows Research has shown that computer modeling is becoming a tool for the design of wear-resistant slurry pumps ( Ref 37 , 38 , 39 , 40 , 41 ). A computer code is used to carry out the numerical flow simulations within the pump channels, and an energy-based, wear...
Image
Published: 01 January 2002
Fig. 8 Processes by which a material is damaged by liquid impingement erosion. (a) Solid surface showing initial impact of a drop of liquid that produces circumferential cracks in the area of impact or produces shallow craters in very ductile materials. (b) High-velocity radial flow of liquid More
Image
Published: 15 January 2021
Fig. 8 Processes by which a material is damaged by liquid impingement erosion. (a) Solid surface showing initial impact of a drop of liquid that produces circumferential cracks in the area of impact or produces shallow craters in very ductile materials. (b) High-velocity radial flow of liquid More
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001850
EISBN: 978-1-62708-241-9
... through which it moves via the down leg, goose neck, and blow pipe into thirty-four water cooled tuyeres. The hot blast flow rate of the furnace is 350 kNm 3 /h with an oxygen flow rate of 37 kNm 3 /h (% enrichment ~ 7.5) and humidity of 15 t/h. In view of the fact that the hot blast flows through...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0046422
EISBN: 978-1-62708-234-1
.... This type of dynamometer acts somewhat like a stalled hydraulic coupling: Vanes in the rotor impart tangential momentum to the water recirculating in a spiral path in the toroidal working compartment, and this momentum is killed by the fixed stator vanes. This results in dissipation of mechanical energy...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001840
EISBN: 978-1-62708-241-9
... Abstract Explosive cladding is a viable method for cladding different materials together, but the complicated behavior of materials under ballistic impacts raises the probability of interfacial shear failure. To better understand the relationship between impact energy and interfacial shear...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006838
EISBN: 978-1-62708-329-4
... motion indicates less free-flowing powder. Blade rotation and vertical movement of powders occur simultaneously, and both rotational and vertical resistances can provide different measures of flow energy that quantify the resistance to forced flow. The three categories of powder properties available from...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001522
EISBN: 978-1-62708-235-8
..., which indicated turbulent filling of the mold. Spherical pores would have indicated the melt had been improperly degassed. Based on these findings, it was recommended that the manufacturer analyze and redesign the gating system to eliminate the turbulent flow problem during the permanent mold casting...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003569
EISBN: 978-1-62708-180-1
.... , Avoiding Cavitation in the Suction Stage of High-Energy Pumps , World Pumps , Vol 348 , 1995 , p 10 – 48 28. Chan W.K. , Correlation between Cavitation Type and Cavitation Erosion in Centrifugal Pumps , Int. J. Heat Fluid Flow , Vol 11 ( No. 3 ), 1990 , p 269 – 271 29. Hunt...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006796
EISBN: 978-1-62708-295-2
... observed on the rough surface of peak-to-peak roughness even smaller than 10 μm, which is the same order as the liquid-film thickness prevailing over the wall material. Fig. 7 Erosion depth, E d , versus local flow volume, q · t . Source: Ref 45 Peak-to-peak roughness versus sandpaper grit...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006933
EISBN: 978-1-62708-395-9
... assesses the sample in the as-molded condition, while the second run evaluates the inherent properties of the material. Results The plotted results obtained during a DSC analysis are referred to as a thermogram. The thermogram shows the heat flow in energy units or energy per mass units on the y...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006795
EISBN: 978-1-62708-295-2
... the flue gases to flow through smaller passages at higher velocity. This effect, sometimes called laning, exposes tube surfaces to a greater probability of impact by particles having higher kinetic energy, thus increasing the rate of damage. Erosion by fly ash causes polishing, flat spots, wall thinning...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c9001603
EISBN: 978-1-62708-228-0
... 10 (PA 370) specification and tested on a 10 ton static universal testing machine (Instron-1195 model, Instron Ltd., High Wycombe Bucks, UK) at a strain rate of 6.6 × 10 −4 /s. Standard Charpy V-notch samples were prepared and tested at 0 °C for Charpy impact energy (CIE). The temperature rise during...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001798
EISBN: 978-1-62708-241-9
... with thermogravimetric analysis. Based on test data, the epoxy resin had not been properly cured and was hydrolyzed in its compromised state because of humidity. Hence, the depolymerized material gradually softened to the point where the effect of creep caused it to flow, ultimately causing the failure...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001127
EISBN: 978-1-62708-214-3
... that time span, both tank floats broke from their stems, causing water to flow continuously at full capacity into both tanks. Most of the water in each tank drained through the overflow standpipe into the main sewer. Only a relatively small amount soaked the carpeting and padding in adjacent rooms...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003568
EISBN: 978-1-62708-180-1
...-pressure history (and resulting stress waves) can produce circumferential cracks or deformation patterns around the initial area of impact ( Fig. 8a ), depending on the properties of the surface material and the energy of the impact. Following impact, the liquid flows away radially at high velocity...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0091703
EISBN: 978-1-62708-229-7
... Abstract An arsenical admiralty brass (UNS C44300) finned tube in a generator air cooler unit at a hydroelectric power station failed. The unit had been in operation for approximately 49,000 h. The cooling medium for the tubes was water from a river. Air flowed over the finned exterior...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001316
EISBN: 978-1-62708-215-0
... 3. 27.9× The inside surfaces were studied further using energy-dispersive spectroscopy (EDS) to identify the elements associated with the oxidized inner surfaces that may have caused corrosion. For all three separators, the following elements were detected in decreasing order of content: iron...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001615
EISBN: 978-1-62708-235-8
... of the forging preform, which subsequently increased in the final stage. A high upset strain during forging, especially in the final stage, accentuated the center burst by high lateral flow of the metal. It was concluded that the center burst of the axle forging resulted from a high concentration of nonmetallic...