Search
CSV
RISThree-Dimensional Tube Geometry Control for Rotary Draw Tube Bending, Part 2: Statistical Tube Tolerance Analysis and Adaptive Bend Correction
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The control of each individual bend and overall process is presented in Part 1 of the paper. In Part 2 of the paper, statistical methods are used to analyze and improve 3-D tube bending ...
Distortion of Rectangular Tubes in Stretch Bending
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: During stretch bending, considerable in-plane distortion occurs when a thin-walled rectangular tube is plastically bent. To minimize the distortion, fixed walls are used to limit the bulging of ...
Three-Dimensional Tube Geometry Control for Rotary Draw Tube Bending, Part 1: Bend Angle and Overall Tube Geometry Control
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Traditional trial-and-error springback compensation methods have the problems of high scrap rate, low efficiency, high cost of fixtures and operator experience dependency. The method presented in ...
Lapping Control of Hard Disk Drive Heads
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Bar lapping is a key process in fabricating computer hard disk drive heads. The purpose is to remove a small amount of material so that the transducer stripe height variation across the bar ...
Modeling and Closed-Loop Control of Stretch Bending of Aluminum Rectangular Tubes
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: During stretch bending, considerable springback will occur after a tube has been plastically bent. To predict the springback, a simplified two-flange model for stretch bending of a rectangular ...
System Identification and Adaptive Control of the Multi-Axis Bending and Twisting Process
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An adaptive control scheme for the multi-axis bending and twisting process based on system identification of process models is presented. Three system identification methods, the frequency-response, ...
Compressible-Flow Modeling With Pseudo Bond Graphs
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A finite lump pseudo bond graph scheme for isothermal and isentropic pipe flows of ideal gas is developed on the basis of the governing differential equations and an assumption of staggered ...
Estimation, Control and Optimization of Curing in Thick-Sectioned Composite Parts
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A nonlinear model-based control method is proposed and validated for controlling, estimating and optimizing the cure in composite parts. During the cure, the exothermic reaction causes temperature ...
Modeling and Control of the In-Situ Thermoplastic Composite Tape-Laying Process
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In thermoplastic tape-laying with in-situ consolidation, a laminated composite is constructed by the local application of heat and pressure. A moving head, applying heat and pressure, lays down ...
Scaling Analysis and a Critical Thickness Criterion for Thermosetting Composites
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In thermosetting composite manufacturing, part thickness, mold temperature, pressure, and resin kinetics can affect the uniformity of cure in the finished part. If the interaction of these ...