Results 81 to 90 of about 11,967 (233)

Failure Mechanisms of Short Fiber Reinforced Composite Materials Subjected to Dynamic Loading

Polymer Composites, EarlyView.
Failure Mechanisms of Short Fiber Reinforced Composite Materials Subjected to Dynamic Loading. ABSTRACT The mechanical behavior of short carbon fiber reinforced polylactic acid (SCF/PLA) composites fabricated by fused deposition modeling (FDM) is crucial for engineering applications, yet their strain‐rate dependence is not fully understood.
Hui Liu, James P. Dear, Jin Zhou, Yugang Duan, Zhongwei Guan, Wesley J. Cantwell, John P. Dear   +6 more
wiley   +1 more source

Experimental investigation of an aggregate material behavior under confinement at high strain rate

EPJ Web of Conferences, 2010
Low velocity impacts can ignite explosives or energetic materials. Ignition depends on the mechanical behavior of the energetic material which needs to be characterized for both high pressure level and high strain rate.
Biessy M., Delvare F., Bailly P., Vial J., Picart D.   +4 more
doaj   +1 more source

On backward dispersion correction of Hopkinson pressure bar signals [PDF]

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2014
Elastic theory shows that wide spectrum signals in the Hopkinson pressure bar suffer two forms of distortion as they propagate from the loaded bar face. These must be accounted for if accurate determination of the impact load is to be possible. The first form of distortion is the well-known phase velocity dispersion effect.
A, Tyas, Z, Ozdemir
openaire   +2 more sources

On the compatibility of single‐scan terrestrial LiDAR with digital photogrammetry and field inventory metrics of vegetation structure in forest and agroforestry landscapes

Remote Sensing in Ecology and Conservation, EarlyView.
The single‐scan approach to terrestrial laser scanning (TLS) and the self‐terrain‐normalized form of drone‐based digital aerial photogrammetry (DAP) offer practical options for rapid assessment of the vegetation structure in tropical landscapes.
Magnus Onyiriagwu, Nereoh Leley, Caleb W. T. Ngaba, Anthony Macharia, Henry Muchiri, Abdalla Kisiwa, Martin Ehbrecht, Delphine Clara Zemp   +7 more
wiley   +1 more source

Controls on dissolved organic carbon quantity and chemical character in temperate rivers of North America [PDF]

, 2013
Understanding the processes controlling the transfer and chemical composition of dissolved organic carbon (DOC) in freshwater systems is crucial to understanding the carbon cycle and the effects of DOC on water quality.
Aiken, George, Hanley, Kevin W., Huntington, Thomas, Salisbury, Joseph, Wollheim, Wilfred M.   +4 more
core   +3 more sources

A Constant Acoustic Impedance Mount for Sheet-Type Specimens in the Tensile Split-Hopkinson Bar

EPJ Web of Conferences, 2018
This paper addresses a problem well-known amongst practitioners of the Split-Hopkinson Tension Bar method: attaching a flat test specimen made from sheet material to the cylindrical input-and output bars.
Ganzenmüller Georg. C., Langhof Timo, Hiermaier Stefan   +2 more
doaj   +1 more source

Role of extracellular carbonic anhydrase in the polar diatom Fragilariopsis cylindrus

New Phytologist, EarlyView.
Summary Diatoms are major primary producers in productive polar oceans, where cold temperatures and high CO2 solubility raise questions as to whether they rely on the CO2‐concentrating mechanism (CCM) to saturate photosynthesis. Knowledge of CCM function will help better predict the sensitivity of diatom primary production to warming and acidifying ...
Meng Li, Jodi N. Young
wiley   +1 more source

Quasi-static and Dynamic Behavior of Additively Manufactured Metallic Lattice Cylinders

, 2018
Lattice structures have tailorable mechanical properties which allows them to exhibit superior mechanical properties (per unit weight) beyond what is achievable through natural materials.
Abraham, Joseph, Bhate, Dhruv, Magallanes, Joseph, Sadeghi, Hossein   +3 more
core   +1 more source

Pandemic Geographies of Home: Domestic Thresholding in Response to COVID‐19

Transactions of the Institute of British Geographers, EarlyView.
Short Abstract With the home at the forefront of political and public health responses to COVID‐19, the thresholds between domestic space and the world beyond acquired a new significance in people's everyday lives. This paper introduces the concept of ‘thresholding’ to explore the ways in which internal and external thresholds are understood and ...
Alison Blunt, Kathy Burrell, Annabelle Wilkins, Georgina Endfield, Miri Lawrence, Eithne Nightingale, Alastair Owens, Jacqueline Waldock   +7 more
wiley   +1 more source

On loading velocity oscillations during dynamic tensile testing with flying wheel systems

EPJ Web of Conferences, 2015
Flying Wheels (FW) provide a space-saving alternative to Split Hopkinson Bar (SHB) systems for generating the loading pulse for intermediate and high strain rate material testing.
Erice Borja, Roth Christian, Gary Gerard, Mohr Dirk   +3 more
doaj   +1 more source