Results 61 to 70 of about 20,107 (303)

Nondestructive Testing of Welded Composite Metal Foams

Advanced Engineering Materials, EarlyView.
X‐ray computed tomography (CT) is used to evaluate welded steel–steel composite metal foam (CMF) joints of two density classes. It reports variation in postweld spatial void distribution and correlates it to weld‐induced changes, mechanical performance, and failure within welded CMF panels.
Chinmaya Prerana Inguva, Aman Kaushik, Afsaneh Rabiei   +2 more
wiley   +1 more source

Influence of Surface Finish on the Tribological Performance of AlTiBN Coatings Deposited on Forming Tools

Advanced Engineering Materials, EarlyView.
Aluminum and nitride coatings are used in industry because they are hard, resist wear, and protect against oxidation. Adding boron can improve friction behavior and other properties. This study tests coatings on surfaces with different finishes. Results show smoother surfaces perform better, while rough ones wear faster, although coatings can reduce ...
Adrián Claver, Iker Alfonso, Eneko Barba, Javier León, José Antonio García, Iñaki Zalakain, Iván Fernández Martínez, Arley García‐Carrero, Christian Almeyda, Daniel Salcedo   +9 more
wiley   +1 more source

Hybrid-Mechanism Deep Learning Modeling for Machine Tool Thermal Error: Robust Prediction via Few-Sample Learning

Machines
To address spindle thermal error in precision machining, this study proposes a hybrid modeling method. It combines a physical model for linear deformation with a GAT-LSTM network.
Hongru Chen, Yubin Huang, Chaochao Qiu, Xueyan Ning, Pingjiang Wang, Ke Yang   +5 more
doaj   +1 more source

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  

The Role of Measurement and Modelling of Machine Tools in Improving Product Quality

, 2013
Manufacturing of high-quality components and assemblies is clearly recognised by industrialised nations as an important means of wealth generation. A “right first time” paradigm to producing finished components is the desirable goal to maximise economic ...
Parkinson, Simon, Fletcher S., Parkinson, S., Fletcher, Simon, S. Fletcher, Fletcher, S., Myers, Alan, Longstaff, Andrew P., Myers, A., Myers A., Longstaff, A. P., S. Parkinson, Parkinson S., Longstaff A.P., A.P. Longstaff, A. Myers   +15 more
core   +1 more source

Hybrid Thermal Error Compensation Combining Integrated Deformation Sensor and Regression Analysis Based Models for Complex Machine Tool Designs

, 2023
2840Thermal errors remain the dominant sources of positioning inaccuracies in machine tools. Various methods of reducing them have already been developed, ranging from cooling and air conditioning strategies, thermally optimized machine tool designs and ...
Brecher, Christian, Bertaggia, Nico, Zontar, Daniel, Naumann, Andreas, Herzog, Roland, Glänzel, Janine, Dix, Martin, Naumann, Christian, Geist, Alexander   +8 more
core   +1 more source

A Dislocation Perspective on Strength and Toughness in Ceramics

Advanced Engineering Materials, EarlyView.
Dislocations in ceramics enjoy a long but yet under‐appreciated history. The three research waves for dislocations in ceramics highlight the topic evolution over the last 90 years. This review focuses on the impact of dislocation on strength and toughness in ceramics.
Xufei Fang
wiley   +1 more source

Generalising the Machine Tool Integrated Inverse Multilateration Method for the Ambient Thermal Error Analysis of Large Machine Tools in Industrial Environments

Applied Sciences
This study expands on prior research by generalising the machine tool integrated inverse multilateration methodology to evaluate ambient thermal effects on medium- and large-sized machine tools in industrial environments.
Fernando Egaña, Unai Mutilba, José A. Yagüe-Fabra, B. Ahmed Chekh, Susana Lopez   +4 more
doaj   +1 more source

Efficient Offline Thermal Modelling for Accurate Assessment of Machine Tool Thermal Behaviour

, 2009
Thermal gradients from internal and external heat sources cause instabilities which affect the machine tool positional accuracy. Positioning error results from deformation of the machine structure due to linear thermal expansions of some machine parts ...
Longstaff, Andrew P., Myers, A., Pislaru, Crinela, Longstaff, A. P., Mian, Naeem S., Fletcher, Simon, Mian, N. S., Fletcher, S., Myers, Alan, Pislaru, C.   +9 more
core  

Inverse Identification of Energy‐Dependent Laser Absorptivity in NiTi Laser Powder‐Bed Fusion via Calibrated Melt Pool Simulation

Advanced Engineering Materials, EarlyView.
A combined experimental–computational framework identifies energy‐dependent laser absorptivity for NiTi in laser powder‐bed fusion, applicable to conduction and transition modes. Single‐track experiments and thermofluid smoothed particle hydrodynamics simulations are coupled through inverse analysis of melt pool geometry.
Mohamadreza Afrasiabi, Hadi Moutablaleh, Ignatius A. Setiawan, Mehrshad Mehrpouya   +3 more
wiley   +1 more source