Journal of Pressure Vessel Technology: Recent submissions
Now showing items 2521-2540 of 4506
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The History of the B2 Stress Index
(The American Society of Mechanical Engineers (ASME), 2002)The history of the primary stress design equations for Class 1 and 2 elbows in the ASME Boiler and Pressure Vessel Code (Section III, Division 1, Subsections NB and NC) is reviewed. The ... -
Acoustic Fatigue of Impellers of Rotating Machinery
(The American Society of Mechanical Engineers (ASME), 2002)Impellers of air, gas, or steam moving rotating machinery are exposed to acoustic pressure loading (pressure pulsations) from acoustic waves generated in the gaseous medium from flow within the ... -
Neutron Diffraction Maps of Stress Concentration Near Notches Under Load at Temperature
(The American Society of Mechanical Engineers (ASME), 2002)Recent advances in neutron detector technology and the ability of neutrons to penetrate through many millimeters of most engineering materials have made it feasible to investigate the effects ... -
Enhanced Measurement of Residual Stress by Speckle Correlation Interferometry and Local Heat Treating for Low Stress Levels
(The American Society of Mechanical Engineers (ASME), 2002)The measurement of residual stresses by laser annealing and electronic speckle pattern interferometry has been successful for moderate to high stress levels. However, for lower stress levels, say ... -
The Effect of Prior Cold Work on Tensile Residual Stress Development in Nuclear Weldments
(The American Society of Mechanical Engineers (ASME), 2002)Austenitic alloy weldments in nuclear reactor systems are susceptible to stress corrosion cracking (SCC) failures. SCC has been observed for decades and continues to be a primary maintenance ... -
Nondestructive Monitoring of Stress Relaxation in Welded Steel Plates
(The American Society of Mechanical Engineers (ASME), 2002)This study investigates transverse stress relaxation in welded steel plates. Two different methods of stress measurement were used; strain gages and critically refracted longitudinal (LCR) waves. ... -
Wave Propagation Induced by Multiple Piezoelectric Actuators in Electromechanical Structures
(The American Society of Mechanical Engineers (ASME), 2002)This paper provides a theoretical analysis of the elastic wave propagation in an elastic medium induced by embedded piezoceramic actuators under dynamic electric loads. A new actuator model ... -
Ultrasonic Stress Measurement and Material Characterization in Pressure Vessels, Piping, and Welds
(The American Society of Mechanical Engineers (ASME), 2002)A pressure vessel has been constructed for demonstrating the LCR ultrasonic technique for indicating changes in wall and weld stress. A special contoured LCR probe was designed and constructed, ... -
Comparison of Acoustoelastic Methods to Evaluate Stresses in Steel Plates and Bars
(The American Society of Mechanical Engineers (ASME), 2002)Most of the methods for determining residual stresses inside metallic solids are destructive, which is undesirable. The ultrasonic technique provides a useful nondestructive tool in the evaluation ... -
Characterization of Stress at a Ceramic/Metal Joined Interface by the V(z) Technique of Scanning Acoustic Microscopy
(The American Society of Mechanical Engineers (ASME), 2002)It is well known that the process of heating and then cooling dissimilar materials introduces considerable stress at and near the interface. In this article, first, the surface wave velocity ... -
Potentialities of Ultrasonics for Evaluating Residual Stresses: Influence of Microstructure
(The American Society of Mechanical Engineers (ASME), 2002)The good control of residual stress level in mechanical components is an important factor, particularly for a good fatigue strength of these components. This paper presents advances obtained at ... -
Elastic Guided Waves in a Layered Plate With a Rectangular Cross Section
(The American Society of Mechanical Engineers (ASME), 2002)Ultrasonic guided waves in a layered elastic plate of rectangular cross section (finite width and thickness) are studied in this paper. A semi-analytical finite element method in which the ... -
Embedded Active Sensors for In-Situ Structural Health Monitoring of Thin-Wall Structures
(The American Society of Mechanical Engineers (ASME), 2002)The use of embedded piezoelectric-wafer active-sensors for in-situ structural health monitoring of thin-wall structures is presented. Experiments performed on aircraft-grade metallic specimens of ... -
A Baseline and Vision of Ultrasonic Guided Wave Inspection Potential
(The American Society of Mechanical Engineers (ASME), 2002)Ultrasonic guided wave inspection is expanding rapidly to many different areas of manufacturing and in-service inspection. The purpose of this paper is to provide a vision of ultrasonic guided ... -
Overview of the Impact of Ultrasonic Examination Performance Demonstration on the ASME Boiler and Pressure Vessel Code
(The American Society of Mechanical Engineers (ASME), 2002)This paper addresses implementation of ultrasonic (UT) process qualification by performance demonstration as imposed by the ASME Boiler and Pressure Vessel Code Section XI, Appendix VIII. The ... -
Guided Wave Resonance Tuning for Pipe Inspection
(The American Society of Mechanical Engineers (ASME), 2002)Tremendous interest has surfaced recently on the use of guided waves in pipe inspection in the oil, chemical, and power generating industries. Relatively long lengths of piping can be inspected ... -
EMAT-Based Inspection of Concrete-Filled Steel Pipes for Internal Voids and Inclusions
(The American Society of Mechanical Engineers (ASME), 2002)Concrete-filled steel pipes have been used as piles for supporting civil and marine structures. These piles provide good bending resistance, and can be easily spliced for long depth installation. ... -
Laser-Optic Evaluation for Bond Quality of Polymeric Medical Tubing
(The American Society of Mechanical Engineers (ASME), 2002)A noncontact, laser-optic based laser ultrasonic technique referred to as the thermo-acousto-photonic nondestructive evaluation (TAP-NDE) was utilized to investigate bond integrity and localized ... -
Cutting With High-Pressure Ammonia Jets for Demilitarization of Chemical Weapons
(The American Society of Mechanical Engineers (ASME), 2002)This paper presents a study on using high-pressure ammonia and abrasive ammonia jets for cutting and washout of chemical weapons. The work focused on chemical rocket M55 simulants. A test ... -
Special Issue on Nondestructive Characterization of Structural Materials
(The American Society of Mechanical Engineers (ASME), 2002)Nondestructive evaluation (NDE) techniques offer time-efficient methods for determining properties as well as characterizing defects in materials and structures. Application of these NDE techniques ...