1-20 of 172 Search Results for

ultrasonic reliability model

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 Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006443
EISBN: 978-1-62708-190-0
.... It describes the NDE engineering and NDE process control, along with some case studies related to the applications of NDE. The article reviews various models for predicting NDE reliability, such as ultrasonic inspection model, eddy current inspection model, and radiographic inspection model. It...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006558
EISBN: 978-1-62708-290-7
... embedded into 3D printed polymers. Low-temperature metal alloys (solders) have been printed with modified thermoplastic extrusion heads in legacy fused deposition modeling systems ( Ref 18 ) and also through injection of molten metal into cavities in polymer structures ( Ref 19 ) to provide interconnection...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006473
EISBN: 978-1-62708-190-0
... inclusions, which can also be processed using algorithms such as Born inversion ( Ref 8 ). The ultrasonic NDT landscape has been further revolutionized by the increased availability of modeling ( Ref 10 ) and a diverse array of research and commercially available codes ( Ref 11 ) and model-based POD studies...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006460
EISBN: 978-1-62708-190-0
.... This qualitative explanation can easily be made quantitative, and an analytical expression can be readily obtained if the laser pulse shape can be described analytically ( Ref 13 , 14 , 15 ). Further to this unidimensional model, three-dimensional (3-D) cases have been treated assuming axisymmetric...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006465
EISBN: 978-1-62708-190-0
... Abstract Additive manufacturing (AM) is the process of joining materials to make parts from three-dimensional (3D) model data, usually layer upon layer, as opposed to subtractive manufacturing and formative manufacturing methodologies. This article discusses various defects in AM components...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003435
EISBN: 978-1-62708-195-5
... dielectric cure sensors, fiberoptics-based resin cure sensors, ultrasonics-based resin cure sensors, and dosimetry-based resin cure sensors. The article provides information on the resin cure control flow sensing, flow modeling, flow mapping, and resin flow. It addresses some practical issues in sensing...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006457
EISBN: 978-1-62708-190-0
... Contamination of the adhesive or substrate prior to bonding The conclusions indicate that ultrasonic bond test instruments are the most reliable and sensitive for detecting voids, porosity, thick adhesive, and corrosion at the bond line, and that they can be used to inspect metal-to-metal and honeycomb...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003436
EISBN: 978-1-62708-195-5
... layers and evaluate the nature of the interface. Another aspect of ultrasonic spectroscopy is the phenomenon of resonance. Resonance is the result of constructive and destructive interference of standing waves in an ultrasonic medium that can be locally modeled as a plate. Positive interference happens...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006402
EISBN: 978-1-62708-192-4
... = constant) is obtained. For a given time, t 0 , the shaded area under the curve f ( t ), that is, the value of F ( t 0 ), is a measure of the probability that the system fails within the time t < t 0 . For the modeling of the distribution of measured wear data and the estimation of reliability...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003045
EISBN: 978-1-62708-200-6
... provided with sufficient thermocouples or other sensors, such as dielectric or ultrasonic transducers, and a cure model has been made for the resin that takes into consideration time, temperature, and viscosity transformations and coordinates these with the dielectric or ultrasonic sensory data, then part...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005420
EISBN: 978-1-62708-196-2
... Abstract This article focuses on the concepts involved in heat-transfer modeling, thermomechanical modeling, and microsegregation modeling of hot tearing. It discusses the modeling of solidification defects, namely, inclusion entrapment, segregation, shrinkage cavities, gas porosity, mold-wall...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005950
EISBN: 978-1-62708-166-5
... simulation of heat treatment processes has proved that it can be a powerful tool to reach those objectives. Mathematical models and computer codes for simulation of hardening processes have been developed in academia since the late 1970s, and commercial finite-element analysis (FEA) software has been around...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006452
EISBN: 978-1-62708-190-0
... with smaller elements to improve accuracy. However, in a dynamic wave-propagation model, the potential spatial variation of displacements anywhere in the model is related to the ultrasonic wavelength; hence, a fine mesh is required throughout. The governing parameter in terms of accuracy is the number...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006445
EISBN: 978-1-62708-190-0
.../camera Image analysis of 3-D volumetric model/image comparison Volume Mostly not possible If inclusion changes total absorption >0.5% More detailed than x-ray. Flaw must cause measurable difference in absorption (>0.5%); no cracks, only volumetric flaws Eddy current local Eddy current in...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004215
EISBN: 978-1-62708-184-9
...). Where possible, the inspection personnel should have been tested and qualified on a test piece that realistically models the items to be inspected in service, with regard to access, orientation, and type of defect. The inspection function should be independent of normal maintenance functions to...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006572
EISBN: 978-1-62708-290-7
... stresses, some SAM processes are beginning to incorporate deformation into their procedures to benefit part consistency and reliability. An example of this is the Big Area Additive Manufacturing (BAAM) system, which uses a somewhat standard fused deposition modeling nozzle accompanied by a heated tamper...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006478
EISBN: 978-1-62708-190-0
... spectroscopy is the phenomenon of resonance. Resonance is the result of constructive and destructive interference of standing waves in an ultrasonic medium that can be locally modeled as a plate. Positive interference happens when an integral number of half-wavelengths occur in the medium, which will happen...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001346
EISBN: 978-1-62708-173-3
... model of a flux with noncorrosive residue. Rosin fluxes possess important physical and chemical properties that make them particularly suitable for use in the electrical industry. They are solid and inactive chemically at room temperature, but at soldering temperatures they gain sufficient activity to...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006458
EISBN: 978-1-62708-190-0
... configurations have been known and studied in detail for a few decades. Although there is an abundance of literature on modeling and understanding the behavior of a wide variety of EMATs, it is the authors’ opinion that the industrial and commercial use of EMATs has lagged behind their potential. For a variety...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006579
EISBN: 978-1-62708-290-7
... through the improvement of feedstock materials, process parameters, process modeling, and material qualification. This article presents a review of the current literature and state of the art for copper alloy AM and features data on AM processes and industrial practices, copper alloys used, selected...