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RISDamped Absorber Optimization and Stability for Semi-Definite Systems Exhibiting Unstable Self-Excitation During Start-Up
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Stability is examined with respect to the torque in the elastic element between motor and load in semi-definite systems exhibiting unstable self-excitation during start-up. Equations are provided ...
A Three-Dimensional Finite Element Evaluation of a Destructive Experimental Method for Determining Through-Thickness Residual Stresses in Girth Welded Pipes
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The accuracy of a destructive, experimental method for the evaluation of through-thickness residual stress distributions is investigated. The application of the method is to a welded pipe that ...
A Model for the Effect of Velocity on Erosion of N80 Steel Tubing due to the Normal Impingement of Solid Particles
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: As part of a combined experimental and computational study of erosion for gas and oil production conditions, a semi-empirical model has been developed to predict erosion ratio behaviors of ...
Unstable Self-Excitation of Torsional Vibration in AC Induction Motor Driven Rotational Systems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The most common NEMA Design Classes of AC induction motors have speed-torque characteristics that can give rise to unstable self-excitation of torsional vibration in rotational systems during ...
Design Curves for Maximum Stresses in Blocks Containing Pressurized Bore Intersections
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Intersecting bore geometries are used in a number of industrial applications such as in fluid ends of reciprocating pumps. Maximum tensile stresses at stress concentration points in the block ...
The Effect of Induction Heating Stress Remedies on Existing Flaws in Pipes
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: One method for reducing stress corrosion cracking problems called induction Heating for Stress Improvement (IHSI) has been successful in producing compressive residual stresses on the inside surface ...
A Fourier Series Back-Computation Method for the Parting-Out Step in Residual Stress Measurements in Pipes
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The first step in a widely used destructive procedure for measuring through-thickness residual stresses in pipes is a parting-out step in which a coupon is cut from the wall of the pipe. ...
Experimental and Computational Residual Stress Evaluation of a Weld Clad Plate and Machined Test Specimens
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Residual stresses in a heat treated weld clad plate and test specimens obtained from the plate are determined using a combination of experimental residual stress analysis and a finite element ...
Velocity Guidelines for Avoiding Erosion-Corrosion Damage in Sweet Production With Sand
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: CO2 corrosion in carbon steel piping systems can be severe depending on a number of factors including CO2 content, water chemistry, temperature, and percent water cut. For many oil and gas ...
Residual Stresses in Weld-Deposited Clad Pressure Vessels and Nozzles
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Results of through-thickness residual stress measurements are provided for a variety of samples of weld-deposited 308/309L stainless steel and Alloy 600 cladding on low-alloy pressure vessel ...