Results 51 to 60 of about 471,078 (279)

Development of an optical probe for evaluation of tool edge geometry

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2014
This paper proposes a non-contact and on-machine measurement method for evaluating tool edge geometry. In the proposed method, a focused laser beam having a diameter of several micrometres traces over the tool edge.
SungHo JANG, Yuki SHIMIZU, So ITO, Wei GAO   +3 more
doaj   +1 more source

Customized exposure strategies for manufacturing hybrid parts by combining laser beam melting and sheet metal forming

Journal of laser applications, 2018
Subject of this work are the mechanical, geometrical and microstructural properties of hybrid parts from Ti6Al4V sheet metal bending and Laser Beam Melting (LBM) in dependence of the extended LBM process parameters.
F. Huber, T. Papke, Melanie Kerkien, Florian Tost, Georg Geyer, M. Merklein, Michael Schmidt   +6 more
semanticscholar   +1 more source

Low‐Angle Grain Boundaries and Re‐Segregation in Single‐Crystalline Ni‐Base Superalloys

Advanced Engineering Materials, EarlyView.
This work demonstrates that Re‐segregation at low‐angle grain boundaries (LAGBs) in Ni‐base superalloys is influenced by misorientation angle. Advanced microscopy and atom probe tomography reveal that higher misorientation angles increases Re‐segregation.
Alireza B. Parsa, Aparna Saksena, Alesander Kostka, Pascal Thome, Felicitas Scholz, Alexandre Mussi, Christoph Somsen, Baptiste Gault, Jan Frenzel, Gunther Eggeler   +9 more
wiley   +1 more source

Increasing of Pulsed Laser Source Peak Power by Use of Ring Fiber-Optic Delay Line

Приборы и методы измерений, 2019
At the present time, developing of autonomous laser systems requires increasing of the output power of the laser sources used in composition of those systems and at the same time reducing of the energy usage in the system.
V. A. Alekseev, M. R. Zaripov, A. S. Perminov, E. A. Sitnikova, V. P. Usol’tsev, S. I. Yuran   +5 more
doaj   +1 more source

A Knowledge‐Based Approach for Understanding and Managing Additive Manufacturing Data

Advanced Engineering Materials, EarlyView.
Additive manufacturing processes generate a large amount of data. Effectively managing, understanding, and retrieving information from this data remains a major challenge. Therefore, we propose an ontology‐based approach to integrate heterogeneous data, enable semantic queries, and support decision‐making.
Mina Abd Nikooie Pour, Prithwish Tarafder, Anton Wiberg, Huanyu Li, Johan Moverare, Patrick Lambrix   +5 more
wiley   +1 more source

Frequency Comb-Based Seed Laser Architecture With Improved Brillouin Performance for Spectral Beam Combining of Narrow-Linewidth Lasers

IEEE Photonics Journal
This study presents a novel approach to spectral beam combining for achieving high output powers with a compact, single module seed laser source based on frequency combs.
Shilpi Arora, Soubhik Pal, C. G. Lakshmi, Sarthak Dash, V.R. Supradeepa   +4 more
doaj   +1 more source

Affecting the Properties of Copper–Graphene Electroconductive Composite by Severe Plastic Deformation

Advanced Engineering Materials, EarlyView.
Copper‐based composites enhanced with carbon feature convenient mechanical properties and favorable electric conductivity. Processing via deformation and thermomechanical treatments can introduce advantageous microstructures further enhancing their performance. Herein, copper–graphene powder‐based composites are directly consolidated via rotary swaging
Radim Kocich, Lenka Kunčická, Pavel Czernek, Zifan Wang   +3 more
wiley   +1 more source

Understanding the Stochastic Nature of Process Parameter Development of Blown Powder Laser Beam Directed Energy Deposition Additive Manufacturing of Pure Molybdenum

Advanced Engineering Materials, EarlyView.
Identified through the use of statistical design of experiments and metallographic investigation, this study exposes the stochastic origins of intergranular cracks in blown powder laser beam directed energy deposition additive manufacturing of pure molybdenum. It further demonstrates a successful crack mitigation approach with direct correlation to the
Nathaniel J. Lies, Daniel E. Driemeyer, Aaron P. Stebner   +2 more
wiley   +1 more source

Quasi-All-Fiber High-Efficiency Divided Chirp-Pulse Amplification System Based on Active Controlling

IEEE Photonics Journal, 2016
We present a new high-efficiency divided chirp-pulse amplification (DCPA) system based on an actively controlled quasi-all-fiber structure. As a proof-of-principle experiment, a two-channel amplification system composed of single-mode ytterbium-doped ...
J. Yu, Y. Feng, L. N. Duan, X. H. Li, X. H. Hu, T. Zhang, W. Zhang, Y. S. Wang, Z. Yang, W. Zhao   +9 more
doaj   +1 more source

Is an Apple an Orange? A Large Language Model Benchmark for Candidate Term Extraction and Subclass Decisions Against Upper Ontologies in Engineering and Materials Science

Advanced Engineering Materials, EarlyView.
Building machine‐readable vocabularies for materials science is slow, expert‐driven work. This study benchmarks 13 large language models on two of its first steps: finding candidate terms in engineering articles and deciding where they belong in a class hierarchy.
Thomas Bjarsch, Maximilian Holland, Klaus Drechsler, Johannes Schilp   +3 more
wiley   +1 more source