Results 181 to 190 of about 154,848 (294)

The materials processing research base of the Materials Processing Center [PDF]

open access: yes
The goals and activities of the center are discussed. The center activities encompass all engineering materials including metals, ceramics, polymers, electronic materials, composites, superconductors, and thin films.
Bowen, H. K.   +2 more
core   +1 more source

Confirming the impact origin of the São Miguel do Tapuio structure, northeastern Brazil

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract The São Miguel do Tapuio structure (SMT) is a remarkable, nearcircular feature of about 21 km diameter, centered at 5°37.6′ S, 41°23.3′ W in Piauí state, northeastern Brazil. The structure is located within the sedimentary strata of the Paleozoic–Mesozoic Parnaíba Basin and predominantly comprises sandstones of the Devonian Pimenteiras and ...
Alvaro Penteado Crósta   +9 more
wiley   +1 more source

Performance of PBF‐Printed Micro‐Channel Bipolar Plates as a Function of Flow‐Field Parameters and Plane Area

open access: yesFuel Cells, Volume 26, Issue 3, June 2026.
ABSTRACT SUS 316L bipolar plates (BPPs) with rectangular micro‐channels for polymer electrolyte membrane fuel cell (PEMFC) were fabricated using powder bed fusion (PBF) technology, and the effects of flow‐field structure parameters (channel width, rib width, and channel depth) on fuel cell performance were analyzed.
Chul Kyu Jin, Sung Hwan Bae, Min Sik Lee
wiley   +1 more source

Morphology of Fumes from Hybrid Laser-Arc Welding of X5CrNi18-10 Stainless Steel. [PDF]

open access: yesMaterials (Basel)
Adamiec J   +6 more
europepmc   +1 more source

FY 1991 scientific and technical reports, articles, papers, and presentations [PDF]

open access: yes
Formal NASA technical reports, papers published in technical journals, and presentations by MSFC personnel in FY 1991 are presented. Papers of MSFC contractors are also included.
Turner, Joyce E.
core   +1 more source

A Laser Beam Welding Process and Its Microstructural Thermoelastoplastic Analysis

open access: yesProceedings in Applied Mathematics and Mechanics, Volume 26, Issue 2, June 2026.
ABSTRACT Laser beam welding has emerged as an advanced, contactless joining technique in recent years. This is primarily due to its high feed rates and low thermal distortion compared to conventional welding processes. These advantages stem from the focused energy input of the laser, enabling precise and controlled process execution.
Philipp Hartwig   +2 more
wiley   +1 more source

Efficient Surface Roughness Prediction in Laser Micromachining via Explainability‐Driven Feature Reduction

open access: yesExpert Systems, Volume 43, Issue 6, June 2026.
ABSTRACT Ultra‐short pulse (USP) laser micromachining is a key technology for sustainable manufacturing, offering high precision and minimal thermal damage across a wide range of materials. To enable its effective deployment in industrial environments, it is essential to develop monitoring systems capable of accurately predicting surface roughness at ...
Miguel Camacho‐Sánchez   +6 more
wiley   +1 more source

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