Journal of Pressure Vessel Technology: Recent submissions
Now showing items 301-320 of 4506
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Stability of Allowable Flaw Angles for High Toughness Ductile Pipes Subjected to Bending Stress in the ASME Code Section XI
(The American Society of Mechanical Engineers (ASME), 2022)Allowable stresses for pipes with circumferential flaws are provided by the ASME Code Section XI. The stresses for the high toughness pipes are determined by fully plastic collapse stresses and safety factors. The plastic ... -
Numerical Study of Horizontally Bent Buried Steel Pipelines Subjected to Oblique Faulting
(The American Society of Mechanical Engineers (ASME), 2022)Buried pipelines may be subjected to different seismic hazards along their path, among which faulting can severely affect their integrity by causing large strains in the pipeline confined to a local zone during an earthquake. ... -
Bounded Elastic Moduli Multiplier Technique for Limit Loads: Part 1—Theory
(The American Society of Mechanical Engineers (ASME), 2022)Statically admissible stress distributions are necessary to evaluate lower bound limit loads. Over the last three decades, several methods have been postulated to obtain these distributions using iterative elastic finite ... -
Novel Tube Design for Superheater Heat Exchanger Enabled Via Additive Manufacturing
(The American Society of Mechanical Engineers (ASME), 2022)Superheater tubes are critical boiler components that operate at relatively higher temperatures and pressure. Amongst the primary concerns for these tubes is the deposition of ash particles on the tube surface, leading to ... -
Calculation of the Natural Frequencies of a Fluid-Filled Pipe System With the Coupled Codes dyvro/rohr2: Implementation of an Alternative Coupling Concept
(The American Society of Mechanical Engineers (ASME), 2022)The vibration of a pipe system can be caused by internal excitation, e.g., as a result of pump-induced pressure pulsations or external excitation like earthquake. For the investigation of these phenomena, the knowledge ... -
Overview of Nuclear Piping Seismic Verification
(The American Society of Mechanical Engineers (ASME), 2022)Nuclear power has gone through several transitional phases worldwide with early development, design, and construction in 1960s, 1970s, and 1980s, particularly in Japan and U.S. A relatively less active period followed in ... -
Capturing the Temperature Dependence of Cleavage Fracture Toughness in the Ductile-to-Brittle Transition Regime in Ferritic Steels Using an Improved Engineering Local Approach
(The American Society of Mechanical Engineers (ASME), 2022)Ferritic steels, which are typically used for critical reactor components, including reactor pressure vessels (RPV), exhibit a temperature-dependent probability of cleavage fracture, termed ductile-to-brittle transition. ... -
Numerical Simulation on the Perforation Response of Pressurized Pipe Elbows Under Destructive Impact Loading
(The American Society of Mechanical Engineers (ASME), 2022)Pipe elbows are essential connection components between the storage terminal and conveying pipelines in the petrochemical industry, which are prone to rupture and perforation under various potential impact loads. In this ... -
Equivalent Theodorsen Function for Fluidelastic Excitation in a Normal Triangular Array
(The American Society of Mechanical Engineers (ASME), 2022)Fluidelastic instability (FEI) remains the most important mechanism of flow-induced vibrations, which can potentially cause large amplitude vibrations and early failure of nuclear steam generator tubes. In this study, ... -
The Use of an Equivalent Temperature Field to Emulate an Induced Residual Stress Field in a Rotating Disk Due to Full or Partial Rotational Autofrettage
(The American Society of Mechanical Engineers (ASME), 2022)The evaluation of equivalent temperature fields for cylindrical and spherical pressure vessels to imitate autofrettage-induced residual stresses has been successfully implemented in studying crack growth in autofrettaged ... -
Proposed Material Properties, Allowable Stresses, and Design Curves of Diffusion Bonded Alloy 800H for the ASME Code Section III Division 5
(The American Society of Mechanical Engineers (ASME), 2022)Increased interest in compact heat exchangers (CHXs) to serve as intermediate heat exchangers of very high temperature reactors resulted in significant research and development on their design, analysis, and construction. ... -
Finite Element Analysis of the Load Factor and New Design Method for Bolted Joints Consisting of Dissimilar Hollow Cylinders Under Tensile Loads
(The American Society of Mechanical Engineers (ASME), 2022)In designing a bolted joint consisting of dissimilar hollow cylinders, the load factor (the ratio of an increment in axial bolt force to an external tensile load) is important. However, no researches on the characteristics ... -
Assessing the Secondary Stress in a Pipe System With Circumferential Surface Crack Using Finite Element Modeling
(The American Society of Mechanical Engineers (ASME), 2022)In flaw evaluation criteria, the design limits for the secondary stresses are frequently different than the primary stresses. The evaluation procedure for primary stresses is load-controlled based which is independent of ... -
A New Risk Assessment Model to Check Safety Threats to Long-Distance Pipelines
(The American Society of Mechanical Engineers (ASME), 2022)With the number of long-distance pipelines increasing in China, risk management has become important for controlling pipeline leakage. However, all the current assessment technologies are semiquantitative and do not include ... -
Research on Prediction Models for the Compression-Resilience Performance of Corrugated Metal Gaskets With Residual Stress
(The American Society of Mechanical Engineers (ASME), 2022)The manufacturing process is an important factor related to the compression-resilience performance of corrugated metal gaskets, especially stainless steel gaskets. A finite element method was employed to research the ... -
Analysis of Stresses and Strains in Stainless Steel 316 L Tubes Subjected to Die Expansion
(The American Society of Mechanical Engineers (ASME), 2022)SS316 L finned tubes are becoming very popular in high-pressure heat exchangers and particularly in CO2 cooler applications. Due to the high pressures present during operation, these tubes require an accurate residual ... -
Weldability and the Effect on Heat-Affected Zone Microstructure of a High Hardenability Boron Steel Compared to SAE 1045 After Shielded Metal Arc Welding
(The American Society of Mechanical Engineers (ASME), 2022)One of the steels commonly used in the industry in mechanical devices, tools, and structural steels is SAE 1045. A possible replacement for this alloy is SAE 15B30 with similar mechanical properties and has been used in ... -
Study of Residual Stress Evolution in SUS304/Q235 Bimetallic Clad Plate Butt-Welded Joints Considering Welding Sequence
(The American Society of Mechanical Engineers (ASME), 2022)Residual stress prediction and controlling is important for structural integrity assessment of weldments. In this work, finite element (FE) and experimental methods were integrated to study the influence of welding sequence ... -
Failure Criteria for Brittle Notched Specimens
(The American Society of Mechanical Engineers (ASME), 2022)Recently, new failure criteria were proposed for brittle materials to predict their failure loads regardless of the shapes of a notch or a crack in the material. This paper is to further evaluate the failure criteria for ... -
Mechanical Degradation Behavior of Single Crystal LiNixNnyCozO2 Cathode in Li-Ion Battery by Indentation Analysis
(The American Society of Mechanical Engineers (ASME), 2022)LiNixMnyCozO2 (NMC) is among the most promising cathode materials for commercial Li-ion batteries due to its high electrochemical performance. However, NMC composite cathode is still plagued with limited cyclic performance, ...