1-20 of 149 Search Results for

fluid flow

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001686
EISBN: 978-1-62708-220-4
... transfer fluid. Design conditions are based on annular fluid flow to cool the coil wall. NDE, metallographic and fractographic examinations were performed. Numerous, circumferentially oriented, OD initiating cracks were found near the crown for two coils near the non-fired end of the vaporizer...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001314
EISBN: 978-1-62708-215-0
... the allowable operating temperature for the fluid. The probable cause for failure is thermal fatigue due to the localized overheating. Flow conditions inside the tubing should be reexamined to ensure suitable conditions for annular fluid flow. Cracking (fracturing) Heat exchangers Mechanical properties...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0045992
EISBN: 978-1-62708-225-9
... Abstract After two weeks of operation, a poppet used in a check valve to control fluid flow and with a maximum operating pressure of 24 MPa (3.5 ksi) failed during operation. Specifications required that the part be made of 1213 or 1215 rephosphorized and resulfurized steel. The poppet...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0047441
EISBN: 978-1-62708-234-1
... with the classic spongy appearance of cavitation. Two changes were proposed: streamlining the part to avoid abrupt changes in fluid flow; and a change in alloy to a more corrosion-resistant material (304 or preferably 316) to increase the tenacity of protective films. Cavitation Design Supports 8620...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c0048350
EISBN: 978-1-62708-227-3
... the tubes was changed to reduce the amount of restraint and the strain concentration. Constraining Fluid flow Strain Supports Carbon-molybdenum steel Fatigue fracture Tubes in a marine boiler on a new ship failed after brief service lives. Circumferential brittle cracking occurred...
Image
Published: 30 August 2021
Fig. 69 (a) Schematic representation of the production system. (b) Location of the pit plug and metal loss and transition of laminar fluid flow to turbulent flow More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c0051866
EISBN: 978-1-62708-228-0
... fluids or modifying the fluids in the tubing or purging by flowing dry nitrogen to dry it out. Coiled steel Drilling Pitting (corrosion) Tubes Structural steel tubing Corrosion fatigue Coiled tubing is used in drilling operations because it eliminates the need for a drilling rig...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001087
EISBN: 978-1-62708-214-3
... and open rotor (impeller). Both the case and the ductile iron rotor core were covered by natural rubber. Analyses conducted included surface examination of wear patterns, chemical analysis of materials, measurement of mechanical properties, and in-place flow tests. It was determined that the proximate...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001294
EISBN: 978-1-62708-215-0
... Abstract A precipitation-hardened stainless steel poppet valve assembly used to shut off the flow of hydrazine fuel to an auxiliary power unit was found to leak. SEM and optical micrographs revealed that the final heat treatment designed for the AM-350 bellows material rendered the AM-355...
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
... or piping is most likely when fluid velocities exceed 2.1 m/s (7 ft/s). Damage occurs first at locations where direction of flow changes, such as elbows or U-bends. Large-radius bends are less susceptible to such damage; however, use of erosion-resistant materials, such as austenitic stainless steel...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001809
EISBN: 978-1-62708-180-1
..., such as oxidation; and some are wear-debris particles. Hydrostatic bearings are flushed continuously by the flow required to carry a load; hydrodynamic bearings are often flushed by a flow of lubricant to remove heat, which develops mostly in the fluid film itself due to viscous shear. It is convenient...
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
.... Hardness Tests The results of hardness tests are shown in Table 1 . Hardness test results of the three encapsulants Table 1 Hardness test results of the three encapsulants Specimen Normal Softened Fluid Hardness (shore A) 93 64 (Flow) a a Represents...
Image
Published: 15 May 2022
Fig. 1 Illustration of flow behavior. (a) Dashpot. (b) Rotational parallel plate. (c) Capillary rheometer geometry. Flow, Fluid behavior, Viscous nature: F = F(v); F ≠ F(x) ; F -force; v , velocity; x , displacement; T , torque; Ω, angular velocity More
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
... tubes that are subjected to direct impingement by wet steam. Liquid impingement erosion in tubing and piping is most likely when fluid velocities exceed 2.1 m/s (7 ft/s). Damage occurs first at locations where direction of flow changes, such as elbows or U-bends. Large-radius bends are less susceptible...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006813
EISBN: 978-1-62708-329-4
..., and regenerative), flow arrangement (e.g., single-pass counterflow), and heat-transfer mechanism (e.g., single- or two-phase convection, such as in condensers or boilers). Tubular heat exchangers are generally used for large fluid systems, whereas heat exchangers of plate or sheet construction are often preferred...
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
... , 27 , 28 ). Most cavitation erosion damage takes place on the suction surface of the impeller because of suction instabilities. With decreasing flow rate, the fluid approaches the impeller blades with larger and larger angles of incidence. This leads to great variations of pressure and velocity...
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
... not be determined by the appearance of the piping. Remedial Action Erosion damage most likely occurs when fluid velocities exceed 2.13 m/s (7 ft/s) ( Ref 1 ). The damage generally occurs first at locations where the direction of flow changes, such as at elbows and U-bends. Flow velocity, V , can...
Image
Published: 30 August 2021
Fig. 73 Corroded area of the elbow showing chipped black scale, mill manufacturing marks, and corrosion on both sides of the downstream girth weld (DSGW). The corrosion occurred where the flow angle of the fluid changed. More
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001082
EISBN: 978-1-62708-214-3
..., in diameter) are used in numerous applications, such as drainage control, boat thrusters, and both power plant and process cooling. Pump impellers are subjected to high-pressure differentials across the intake and exit, high fluid velocities, and fluids that may cause erosion or corrosion. Flow-induced...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006825
EISBN: 978-1-62708-329-4
..., heat transfer is primarily controlled by the conductance of fluid films at the inner and outer surfaces. Although higher heat fluxes cause higher tube-wall temperatures, deposits have a greater effect on tube-wall temperatures and therefore on overheating. Restriction of Fluid Flow as a Cause...