Results 41 to 50 of about 74,643 (325)

Design and Prototyping of Topology‐Optimized, Additively Manufactured Lightweight Components for Space Robotic Systems: A Case Study

Advanced Engineering Materials, EarlyView.
The results demonstrate a simulation‐driven workflow that applies LSB topology optimization with additive manufacturing constraints to mission‐specific load cases, integrating European Cooperation for Space Standardization compliant verification and manufacturability to develop structurally efficient rover suspension components.
Stelios K. Georgantzinos, Grigorios Kostopoulos, Eleni Papadopoulou, Stefanos Voulgaris, Alexandra Tseni, Panteleimon Bakalis, Maria N. Gkara, Chara Ch. Mitropoulou, Georgios Kazakis, Alin Munteanu, Jeremi Gancet, Nikos D. Lagaros   +11 more
wiley   +1 more source

Simulation-Based Generation of Representative and Valid Training Data for Acoustic Resonance Testing

Applied Sciences, 2020
Analyzing eigenfrequencies of serial parts by acoustic resonance testing enables an efficient nondestructive assessment of component quality or structural state. Usually, each application is based on experimentally acquired training data, which represent
Matthias Heinrich, Ute Rabe, Bernd Valeske   +2 more
doaj   +1 more source

Method and apparatus for nondestructive testing [PDF]

, 1974
High voltage is applied to an arc gap adjacent to a test specimen to develop a succession of high frequency arc discharges. Those high frequency arc discharges generate pulses of ultrasonic energy within the test specimen without requiring the arc ...
Hoop, J. M.
core   +1 more source

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

Advanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar, Dhanadeep Dutta, G. Bharat Reddy   +2 more
wiley   +1 more source

D-S-Net: an efficient dual-stage strategy for high-precision segmentation of gross tumor volumes in lung cancer CT images

BMC Cancer
Background Accurate delineation of Gross Tumor Volume (GTV) in lung cancer is critical for effective radiotherapy and surgical planning. However, segmentation of GTV in high-resolution CT images remains challenging, particularly when tumors are small or ...
Chen Yi, Shaofeng Jiang, Liangli Xiong, Jun Yang, Huanhuan Shi, Qiliang Xiong, Bo Hu, Huaiwen Zhang   +7 more
doaj   +1 more source

Distribution of Electrical Resistivity in Single Carbon Fiber Filaments and Its Correlation With Tensile Modulus

Advanced Engineering Materials, EarlyView.
A statistical framework is applied to quantify the distribution of electrical resistivity among individual filaments of two commercially available carbon fiber types. Correlations between filament resistivity, tensile modulus, and diameter are examined and complemented by TEM analysis to provide new insight into filament‐level variability relevant for ...
Nils Wieja, Daniel Sebastian Wolz, Philip Johannes Steinbild, Markus Löffler, Darius Pohl, Jan Wolf, Anja Winkler, Thomas Behnisch, Bernd Rellinghaus, Maik Gude   +9 more
wiley   +1 more source

Data Processing at the Flaw Detector with Combined Multisector Eddy-Current Transducer

Proceedings of the International Conference on Applied Innovations in IT, 2014
There is described data processing at the flaw detector with combined multisectional eddy-current transducer and heterofrequency magnetic field. The application of this method for detecting flaws in rods and pipes under the conditions of significant ...
Evgeny Yakimov, Alexander Goldshtein, Valery Bulgakov, Sergey Shipilov   +3 more
doaj   +1 more source

Influence of internal imperfections on the fatigue resistance of cast steel – testing methodology [PDF]

MATEC Web of Conferences, 2019
Tensile fatigue specimen of G20Mn5 and G22NiMoCr5-6 were tested to quantify the influence of internal defects on the fatigue resistance of cast steel components.
Nagel Sven, Rauber Christof, Veile Ines, Knödel Peter, Ummenhofer Thomas   +4 more
doaj   +1 more source

Micromagnetic Characterization of Operation-Induced Damage in Charpy Specimens of RPV Steels

Applied Sciences, 2021
The embrittlement of two types of nuclear pressure vessel steel, 15Kh2NMFA and A508 Cl.2, was studied using two different methods of magnetic nondestructive testing: micromagnetic multiparameter microstructure and stress analysis (3MA-X8) and magnetic ...
Madalina Rabung, Melanie Kopp, Antal Gasparics, Gábor Vértesy, Ildikó Szenthe, Inge Uytdenhouwen, Klaus Szielasko   +6 more
doaj   +1 more source

Acoustic emission frequency discrimination [PDF]

, 1988
In acoustic emission nondestructive testing, broadband frequency noise is distinguished from narrow banded acoustic emission signals, since the latter are valid events indicative of structural flaws in the material being examined. This is accomplished by
Graham, Lloyd J., Sugg, Frank E.
core   +1 more source