Results 41 to 50 of about 13,222 (282)

The Impact of High‐Productivity Processing on the Fatigue Failure of an Additive Manufactured Superalloy HAYNES 282

Advanced Engineering Materials, EarlyView.
The low cycle fatigue life of additive manufactured HAYNES® 282® superalloy was investigated for conventional and high‐productivity processing: samples of the former lasted 1400–1700 cycles, while samples of the latter failed at ~ 1200 cycles, at 760 °C and 1% strain.
Abdul Shaafi Shaikh, Ahmed Fardan, Tatiana Mishurova, Eduard Hryha   +3 more
wiley   +1 more source

Correlative spatter and vapour depression dynamics during laser powder bed fusion of an Al-Fe-Zr alloy

International Journal of Extreme Manufacturing
Spatter during laser powder bed fusion (LPBF) can induce surface defects, impacting the fatigue performance of the fabricated components. Here, we reveal and explain the links between vapour depression shape and spatter dynamics during LPBF of an Al-Fe ...
Da Guo, Rubén Lambert-Garcia, Samy Hocine, Xianqiang Fan, Henry Greenhalgh, Ravi Shahani, Marta Majkut, Alexander Rack, Peter D Lee, Chu Lun Alex Leung   +9 more
doaj   +1 more source

The effects of linear energy density and gas environment on droplet spatter characteristics and dynamics during selective laser melting

Materials & Design
The spatter produced during SLM significantly impacts the interaction between the laser and the powder bed, with linear energy density and the gas environment being key factors. Utilizing high-speed imaging technology and a novel image processing method,
Guang Yang, Qi Liu, Da An, Xiangming Wang, Ranliang Wu, Han Xie   +5 more
doaj   +1 more source

Two-fluid model to simulate metal powder bed fusion additive manufacturing

Journal of Fluid Science and Technology, 2018
This paper reports our simulations of the metal powder fusion additive manufacturing process based on a two-fluid model. In simulations of metal behavior in which heat is applied by high-density energy sources (e.g., laser or electron beam), the aspects ...
Noriko WATARI, Yuzuru OGURA, Noriko YAMAZAKI, Yukihiko INOUE, Keisuke KAMITANI, Yasuyuki FUJIYA, Masahiko TOYODA, Saneyuki GOYA, Toshiya WATANABE   +8 more
doaj   +1 more source

Impact vesiculation – a new trigger for volcanic bubble growth and degassing [PDF]

, 2007
We highlight a potentially important trigger for bubble growth and degassing in volcanic bombs. We have successfully triggered bubble growth in previously unvesiculated samples of silicate melt during experiments to simulate volcanic bomb impact, by ...
Dingwell, D. B., Rothery, D. A., Spiler, O., Sumner, J. M.   +3 more
core   +1 more source

High-resolution 3D weld toe stress analysis and ACPD method for weld toe fatigue crack initiation [PDF]

, 2019
Weld toe fatigue crack initiation is highly dependent on the local weld toe stress-concentrating geometry including any inherent flaws. These flaws are responsible for premature fatigue crack initiation (FCI) and must be minimised to maximise the fatigue
Chaudhuri, Somsubhro, Crump, J., Mellor, B. G., Reed, P. A. S.   +3 more
core   +2 more sources

Advancing Research on Biomaterials and Biological Materials with Scanning Electron Microscopy under Environmental and Low Vacuum Conditions

Advanced Engineering Materials, EarlyView.
Herein, environmental scanning electron microscopy (ESEM) is discussed as a powerful extension of conventional SEM for life sciences. By combining high‐resolution imaging with variable pressure and humidity, ESEM allows the analysis of untreated biological materials, supports in situ monitoring of hydration‐driven changes, and advances the functional ...
Jendrian Riedel, Lea Dierker, Antoine Eyram Kwame, Kim Nora Wagner, Jonas J. Unterholzner, Jan‐Henning Dirks, Dorothea Brüggemann   +6 more
wiley   +1 more source

Small-volume monogenetic igneous landforms and edifices statistics (SMILES): A catalog of representative mafic volcanic landforms to enable quantitative remote identification

Frontiers in Earth Science, 2022
Accurate classification of terrestrial and non-terrestrial volcanic landforms requires a robust suite of morphometric parameters. The Small-volume Monogenetic Igneous Landforms and Edifices Statistics (SMILES) catalog contains the morphometric ...
Joseph A. Nolan, Alison H. Graettinger
doaj   +1 more source

Cheater\u27s Selfish-Synonymy [PDF]

, 2004
The February issue (WW 04-45) gave the results of my systematic search for coincidental self-synonymy: pairs of words that are unrelated etymologically but via convergent evolution happen to be spelled the same and c. mean the same.

core   +1 more source

Laser Metal Deposition of Aluminum Alloys 7075 and 5083 with the Addition of Volatile Alloying Elements through Powder Blending

Advanced Engineering Materials, EarlyView.
This study investigates laser metal deposition of aluminum alloys EN AW‐7075 and EN AW‐5083, using powder blending to compensate zinc and magnesium evaporation. In situ alloying and ex situ alloying with ZnAl12 and AZ91 preserve near‐standard compositions and improve mechanical properties.
Finn Bendixen, Anastasiya Toenjes, Annika Bohlen, Thomas Seefeld   +3 more
wiley   +1 more source