Results 81 to 90 of about 258,969 (302)

Comparative study of ANN and ANFIS prediction models for thermal error compensation on CNC machine tools

, 2013
Thermal errors can have significant effects on CNC machine tool accuracy. The errors usually come from thermal deformations of the machine elements created by heat sources within the machine structure or from ambient change.
Longstaff, Andrew P., Fletcher, Simon, Abdulshahed, Ali, Myers, Alan   +3 more
core  

Modelling and evaluation of time-varying thermal errors in machine tool elements [PDF]

, 1997
This thesis addresses a comprehensive approach to understanding the time-varying thermal errors in machine tools. Errors in machine tools are generally classified as being time or spatial dependent.
Gim, T., Gim, Taeweon
core  

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

Advanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt, Varma Kvvssn, Hossein Laieghi, Zia Uddin, Peyman Ansari, E. Kıvanç Sadak, Can Barış Toprak, Hüseyin Kızıl, Enrico Salvati   +8 more
wiley   +1 more source

Thermal Error Analysis of Hydrostatic Turntable System

Machines
The thermal error caused by the temperature rise in the service condition of the hydrostatic turntable system has a significant impact on the accuracy of the machine tool.
Jianlei Wang, Changhui Ke, Kaiyu Hu, Jun Zha   +3 more
doaj   +1 more source

A review on transfer learning in spindle thermal error compensation of spindle [PDF]

Advanced Manufacturing
Data-driven approaches offer unprecedented opportunities for smart manufacturing to facilitate the transition to Industry 4.0-based production. One of the key factors affecting the accuracy of machine tools is the thermal error caused by thermal ...
Yue Zheng, Guoqiang Fu, Sen Mu, Sipei Zhu, Kunlong Lin, Long Yang   +5 more
doaj   +1 more source

Efficient offline thermal error modelling strategy for accurate thermal behaviour assessment of the machine tool.

, 2009
Positional accuracy of the machine tool is affected by the instabilities caused by the thermal gradients produced from the internal and external heat sources.
Longstaff, Andrew P., Pislaru, Crinela, Mian, Naeem S., Fletcher, Simon, Myers, Alan   +4 more
core  

Carboxylic‐Acid Functionalized Multiwalled Carbon Nanotube‐Alkane‐Based Resistive Temperature Sensor for Cold Chain Applications

Advanced Engineering Materials, EarlyView.
This study presents a reversible temperature sensor with high switching ratio, ∼103. The device is fabricated using PET‐ITO and carbon nanotube dispersions in alkane. Considering its application in cold chain logistics, a proof‐of‐concept with LED is showcased. Thus, a temperature drop below the threshold temperature (crystallization temperature of the
Sunil Kumar Behera, Philippe Marrec, A. Jorge Parola, Madalena Dionísio, Hugo Águas, Andreia F. M. Santos, Hamed Pourkheirollah, Donald Lupo, César A. T. Laia   +8 more
wiley   +1 more source

High Accuracy Compensation of Straightness Errors in Linear Guideways Under Controlled Thermal and Vibrational Loads

Applied Sciences
On-machine measurement is a highly effective approach for enhancing machining accuracy and efficiency. A critical factor influencing the accuracy of on-machine measurements is the straightness error of the linear guideway.
Zelong Li, Yifan Dai, Tao Lai, Saichen Li, Yufang Zhou   +4 more
doaj   +1 more source

Planar Solid‐State Nanopores Toward Scalable Nanofluidic Integration Based on CMOS Technology

Advanced Engineering Materials, EarlyView.
We present a scalable silicon‐based fabrication strategy for planar solid‐state nanopores to enable their integration with complex nanofluidic systems. Prototype devices demonstrate normal voltage‐current characteristics, good noise performance, and appreciable streaming currents. Our CMOS‐compatible fabrication process offers precise geometric control
Ngan Hoang Pham, Chenyu Wen, Mohammad Hadi Khaksaran, Won‐Yong Lee, Javier Cruz, Klas Hjort, Dongping Wu, Shi‐Li Zhang   +7 more
wiley   +1 more source

Prediction of the Temperature Rise and Thermal Error of Feed Systems Under Repeatable Operating Conditions Using a Superposition Method

Machines
In precision machining, the feed system is a critical subsystem. However, it can generate considerable frictional heat during operation, causing the temperature of the ball screw feed system to rise and resulting in thermal expansion of the ball screw ...
Jen-Hung Huang, An-Shik Yang, Yih-Chyun Hwang, Wen-Hsin Hsieh   +3 more
doaj   +1 more source