Study on seasonal IR signature change of a ship by considering seasonal marine environmental conditions

2017 ◽  
Author(s):  
Do-Hwi Kim ◽  
Kuk-Il Han ◽  
Jun-Hyuk Choi ◽  
Tae-Kuk Kim
Keyword(s):  
Environmental Conditions ◽  
Signature Change ◽  
Ir Signature ◽  
Marine Environmental

scholarly journals The Fracture Toughness of PVC / GRP Sandwich Systems in Marine Environment

2008 ◽  
Vol 17 (1) ◽  
pp. 096369350801700 ◽  
Author(s):  
Cemal Koçhan ◽  
Gökdeniz Neşer ◽  
Çiçek Özes
Keyword(s):  
Fracture Toughness ◽  
Constant Temperature ◽  
Marine Environment ◽  
Environmental Conditions ◽  
Sandwich Beam ◽  
Core Material ◽  
Mode I ◽  
Foam Core ◽  
Marine Environmental

The aim of this study is to investigate experimentally the fracture toughness of sandwich systems with the PVC foam core in marine environment with a Mode-I Cracked Sandwich Beam (CSB) test arrangement. Five CSB specimens at each condition were tested. To get the values under marine environment, one set of specimen was conditioned in a 5% solution of NaCl for a 120 h period at a constant temperature of 50°C. It has been found that the fracture toughness of the PVC foam core material slightly increases under marine environmental conditions. It can be concluded that under the conditions in this study the system with the PVC core was largely unaffected by the immersion process.

scholarly journals Smart Textiles for Visible and IR Camouflage Application: State-of-the-Art and Microfabrication Path Forward

Micromachines ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 773
Author(s):  
Lauren M. Degenstein ◽  
Dan Sameoto ◽  
James D. Hogan ◽  
Asad Asad ◽  
Patricia I. Dolez
Keyword(s):  
Environmental Conditions ◽  
Phase Change Materials ◽  
Three Dimensional ◽  
Electromagnetic Spectrum ◽  
Functional Requirements ◽  
Smart Textiles ◽  
Infrared Sensing ◽  
Sensing Technology ◽  
Ir Signature ◽  
Protective Textiles

Protective textiles used for military applications must fulfill a variety of functional requirements, including durability, resistance to environmental conditions and ballistic threats, all while being comfortable and lightweight. In addition, these textiles must provide camouflage and concealment under various environmental conditions and, thus, a range of wavelengths on the electromagnetic spectrum. Similar requirements may exist for other applications, for instance hunting. With improvements in infrared sensing technology, the focus of protective textile research and development has shifted solely from providing visible camouflage to providing camouflage in the infrared (IR) region. Smart textiles, which can monitor and react to the textile wearer or environmental stimuli, have been applied to protective textiles to improve camouflage in the IR spectral range. This study presents a review of current smart textile technologies for visible and IR signature control of protective textiles, including coloration techniques, chromic materials, conductive polymers, and phase change materials. We propose novel fabrication technology combinations using various microfabrication techniques (e.g., three-dimensional (3D) printing; microfluidics; machine learning) to improve the visible and IR signature management of protective textiles and discuss possible challenges in terms of compatibility with the different textile performance requirements.

scholarly journals Laboratory Test Methods to Determine the Degradation of Plastics in Marine Environmental Conditions

2012 ◽  
Vol 3 ◽  
Author(s):  
Maurizio Tosin ◽  
Miriam Weber ◽  
Michela Siotto ◽  
Christian Lott ◽  
Francesco Degli Innocenti
Keyword(s):  
Laboratory Test ◽  
Environmental Conditions ◽  
Test Methods ◽  
Marine Environmental

Photo-oxidation of n-alkanes in simulated marine environmental conditions

1997 ◽  
Vol 102 (2-3) ◽  
pp. 127-132 ◽  
Author(s):  
M. Guiliano ◽  
F. El Anba-Lurot ◽  
P. Doumenq ◽  
G. Mille ◽  
J.F. Rontani
Keyword(s):  
Environmental Conditions ◽  
Photo Oxidation ◽  
Marine Environmental
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