Results 51 to 60 of about 535 (182)

Characteristics, properties and limitations of per‐ or polyfluoroalkyl substances (PFASs) and fluoropolymers

Polymer International, EarlyView.
An overview and categorization of man‐made per‐ or polyfluoroalkyl substances (PFASs) including low‐molar‐mass and high‐molar‐mass fluorochemicals, and their international regulations is presented. Though certain PFASs are toxic, bioaccumulative and cross the human cellular membranes, others, such as fluoropolymers, are safe, reliable and involved in ...
Bruno Améduri
wiley   +1 more source

Mechanical and Microstructural Properties of Friction Stir Welded Dissimilar Aluminum Alloys and Pure Copper Joints [PDF]

MATEC Web of Conferences, 2019
Joining dissimilar metal alloys such as aluminum and copper is very difficult to be done because of alterations in chemical, metallurgical and physical behavior.
Winarto W., Anis M., Febryansyah B. Eka
doaj   +1 more source

Actuation Strategies for Underwater Jet‐Propelled Soft Robots

Journal of Field Robotics, EarlyView.
ABSTRACT This review article examines jet‐propulsion mechanisms in underwater soft robotic systems, focusing exclusively on physically fabricated and experimentally validated robots. Covering research published from 2013 to 2025, this study classifies and evaluates jet‐propulsion robots based on their actuation mechanisms.
Angel Kitone, Mohammed Anteet, Pawandeep S. Matharu, Yara Almubarak   +3 more
wiley   +1 more source

Physical Anchoring‐Assisted Mechanically Guided Assembly for Material‐Independent 3D Mesostructures

Small, EarlyView.
Conventional mechanically guided 3D assembly relies on selective chemical bonding between 2D precursors and elastomeric substrates, imposing fundamental limitations on material compatibility and scalability. Here, we present a physically anchored, buckling‐guided assembly platform based on a rod array patterned elastomeric substrate (RPES).
Yeonhee Heo, Pei Liu, Jeongmin Yoo, Jae Hyuk Hwang, Gooyoon Chung, Dong‐Gyun Kim, Raudel Avila, Yoonseok Park   +7 more
wiley   +1 more source

Tailoring Laser Powder Bed Fusion and Post‐Processing Parameters for JIS SKD61 Tool Steels: Surface Roughness, Microstructure, and Mechanical Properties

steel research international, EarlyView.
Laser powder bed fusion of JIS SKD61 tool steel is systematically optimized using a Taguchi design and ANOVA. Hatch spacing and layer thickness are identified as dominant parameters controlling surface roughness and tensile strength. Subsequent tempering at 600°C improves microstructural stability and mechanical performance, enabling high‐density SKD61
Masrurotin Masrurotin, Andi Ard Maidhah, Maziar Ramezani, Wojciech Macek, Cho‐Pei Jiang   +4 more
wiley   +1 more source

Anchorage performance of different punching shear reinforcement elements in cracked concrete

Structural Concrete, EarlyView.
Abstract Extensive research has been conducted on the bond and anchorage behavior of reinforcement elements in concrete. While many experimental studies have focused on uncracked concrete, the anchorage performance in the presence of cracks remains insufficiently understood.
Niklas Mueller, Jan Ungermann, Martin Classen, Josef Hegger   +3 more
wiley   +1 more source

Study of the Thermal and Hydrothermal Aging Effects on the Properties of 3D‐Printed Thermoplastic Polyurethane

Journal of Vinyl and Additive Technology, EarlyView.
Effect of post‐aging conditions on mechanical and thermal properties of FDM‐printed parts. ABSTRACT In this study, the thermal and hydrothermal aging of TPU produced with the FDM technique was simulated and subjected to a series of tests. The alterations in the internal structures of the samples that had been subjected to tensile, hardness, adhesive ...
Busra Eyri, Okan Gul, N. Gamze Karsli, Taner Yilmaz   +3 more
wiley   +1 more source

Uncovering hidden bias in neutron diffraction residual strain measurements

Journal of Applied Crystallography, EarlyView.
This work demonstrates that diffraction‐based residual strain calculations and uncertainty estimates depend on how grain populations are sub‐sampled, with important implications for interpreting residual stresses in heterogeneous materials with fine‐scale microstructure and strain gradients.When calculating residual strain via neutron or X‐ray ...
Cole Franz, Michael Prime, Jeffrey Bunn, Andrew Payzant, Katharine Page   +4 more
wiley   +1 more source

Non-synchronous deformation under shot peening post-treatment of SUS304 bar-plate rotary friction weld generates non-monotonic evolution on material and fatigue property

Journal of Materials Research and Technology
Shot peening post-treatment was conducted at SUS304 austenite steel bar-plate rotary friction welding joint with fatigue property deterioration from welding flash.
Kejin Zhang, Chuanzong Li, Xusheng Qian, Jieshi Chen, Hao Lu   +4 more
doaj   +1 more source

Persistent Alarms Confronting New Priorities: Protestants in Africa in Italian and French Catholic Magazines (1945–1962)

Journal of Religious History, EarlyView.
Anti‐Protestantism was one of the reasons for the revival of missions during the interwar period. By the 1960s, however, Protestants were less and less often mentioned as a threat to missionary efforts, and the decline in inter‐confessional tensions was increasingly considered a relic of the past.
Giacomo Canepa
wiley   +1 more source