Results 51 to 60 of about 20,937 (212)

Estimation of Effective Internal Friction Angle by Ball Penetration Test: Large-Deformation Analyses

Journal of Marine Science and Engineering
The ball penetrometer is a full-flow penetrometer used as an alternative to the traditional cone penetrometer for characterizing the strength of soft sediments, particularly for offshore engineering, due to its large projection area. However, if the ball is penetrated under partially drained conditions, the resistance of the ball changes with the ...
Bohan Zhou, Wenli Zhang, Dong Wang, Dengfeng Fu   +3 more
openaire   +2 more sources

Chromatic‐Invariant Photothermal Fabrics Enabled by Narrow‐Bandgap Organic Semiconductors for Wearable Solar Energy Harvesting

Advanced Materials, EarlyView.
A chromatic‐invariant photothermal fabric is fabricated for outdoor activewear, realizing 4°C–8°C heating within 5 min under 1000 W m−2 illumination via NIR absorption, retaining high visible‐light reflectivity and original fabric functions, and achieving >95.3% sterilization in 20 min.
Jingshuai Zhu, Jianming Chen, Shiyu Liao, Jiaxin Zheng, Shiguo Chen, Yuanfeng Wang, Xungai Wang   +6 more
wiley   +1 more source

Hydrogelation via Supramolecular Copolymerization of Structural Water within Adaptive Metal–Organic Fibers

Advanced Materials, EarlyView.
Structural water is harnessed as an active co‐monomer to drive supramolecular polymerization in bulk water. Zinc(II) Salphen complexes confine water molecules to form hollow, metal–organic nanofibers that assemble into adaptive hydrogels with thermoresponsive mechanics and selective chiral recognition.
Merlin R. Stühler, Hesam Makki, Tarek Hilal, Debsena Chakraboty, Mathias Dimde, Kai Ludwig, Rainer Haag, Sabine Rosenfeldt, Dorothee Silbernagl, Andreas Schäfer, Alex J. Plajer   +10 more
wiley   +1 more source

Deployable 3D‐Printed Vascular Stent with Surface‐Catalysed Endogenous Nitric Oxide Generation

Advanced Materials, EarlyView.
A deployable 3D‐printed vascular stent was fabricated with surface‐catalyzed endogenous nitric oxide generation, representing a promising new direction for stent development. The stent can be remotely controlled by magnetic force in its compressed state and fully deployed at the target site using an untethered heat source, potentially eliminating the ...
Kun Zhou, Zifei Han, Kang Lin, Di Wu, Siti Nur Asyura Adzlan, Qingqing Fan, Christina Cortez‐Jugo, Rona Chandrawati, Cyrille Boyer   +8 more
wiley   +1 more source

ANGLE OF INTERNAL FRICTION OF THE GRANULAR MATERIAL AND A SIMPLE TRANSIENT PHENOMENON

Transactions of the Japan Society of Civil Engineers, 1966
In the first part of this paper, relationships between the angle of internal friction and the void in cases of axial symmetry and plane strain were derived by the theory of mechanics of granular material due to the present author.With available data of shearing test on sand, the validity of these formulae mentioned above was examined, the results of ...
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Large‐Area 2D Metasurface‐Based Triboelectric E‐Skin Arrays: Contact & Proximity Tactile Mapping with Broadband Acoustic Readouts

Advanced Materials, EarlyView.
Metasurface‐engineered NC‐TENG arrays integrate tactile pressure mapping, non‐contact gesture sensing, and acoustic signal readouts in one ultrathin module, and outperforms pristine PDMS in terms of electrical output and real‐time spatial mapping for next‐gen wearables.
Injamamul Arief, Swagato Sarkar, Anik Kumar Ghosh, Osvalds Verners, Kamal Kumar Meena, Su‐Hyeong Lee, Soosang Chae, Tobias A. F. König, Beate Krause, Andreas Fery, Mehmet Sait Özer, Anindya Nag, Amit Das   +12 more
wiley   +1 more source

Hydro‐Torsional Compaction for Scalable Production of Aramid Nanofiber Threads with Densely Assembled Double‐Helical Nanostructures

Advanced Materials, EarlyView.
This paper introduces a scalable strategy for producing hierarchically aligned PBDT threads through wet‐spinning, controlled drawing, and post‐spinning twisting. Ionic crosslinking reinforces structural stability, whereas alignment and twisting optimize mechanical performance.
Woojae Jeong, Hwansoo Shin, Junho Lee, Wonsik Eom, Jeong Jae Wie, Tae Hee Han   +5 more
wiley   +1 more source

Investigation of Structural, Mechanical and Electrochemical Properties of Temperature‐Dependent Dual AlN/TiAlN Coating Synthesized by CVD Process

Advanced Materials Interfaces, EarlyView.
This study investigates thermally CVD‐deposited AlN/TiAlN dual‐layer coatings over a Si substrate, focusing on the temperature‐dependent process‐structure relationship. Systematic characterization reveals that a dense AlN interlayer combined with an optimally deposited TiAlN top layer provides enhancement in mechanical strength, tribological stability,
Soham Das, Abhishek Kundu, Debjyoti Sahu, Nikhil Kumar, Spandan Guha   +4 more
wiley   +1 more source

Effect of Surface‐Lubricant Compatibility on Bubble Formation in Lubricant‐Infused Surfaces

Advanced Materials Interfaces, EarlyView.
Lubricant‐infused surfaces reduce drag partly through bubbles that form when lubricant depletes. Using laser‐textured steel infused with silicone oil, we show that microbubble nucleation occurs even on surfaces fully wetted by the lubricant, regardless of chemistry.
Leo James, Isaac J. Gresham, Georg Schnell, Hermann Seitz, Chiara Neto   +4 more
wiley   +1 more source

FULL-SCALE RETAINING WALL TESTS WITH EVALUATION OF WORKING ANGLE OF INTERNAL FRICTION

Doboku Gakkai Ronbunshuu C, 2010
高さ6mの擁壁土圧実験により剛な壁体を有する擁壁土圧の挙動を調べた．裏込め盛土材料には自然含水状態の砂および粘性土を用い，盛土施工過程及び壁のゆるみ変位過程について擁壁土圧を測定した．土圧挙動をクーロンの土くさび平衡理論にもとづき，実測で得られた土圧合力及び傾きから土中のすべり面に働いている起動内部摩擦角を調べ，設計土圧としての検討を行った．砂においては盛土施工中の土圧，盛土完了時の土圧，主働時土圧，残留土圧についてその実態を示した．粘性土の土圧には摩擦材料としての振る舞いや土圧回復現象が観測された．さらに起動すべり面角を評価する事により土圧の影響範囲を推定できる事を示した．擁壁設計土圧の合理化の立場からは，盛土完了時点の実際に働く起動内部摩擦角を評価してそれを用いる事の重要性を提起した．
openaire   +2 more sources