Carbon Fibers

Heine, Michael

doi:10.1002/9783527674046.ch11

Cited by 2 publications

(1 citation statement)

References 94 publications

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“…The carbon fiber type with the highest tensile strength has been known to have a record value of 7500 MPa. [53] Carbon panel thickness significantly affects the ballistic limit of panels impacted by high-velocity, different-shaped projectiles. Thin carbon/epoxy panels bend easily during a ballistic event, absorbing most of the projectile's energy regardless of shape.…”

Section: Ultra-high Molecular Weight Polyethylene (Uhmwpe)mentioning

confidence: 99%

Literature Review of Applicable Ballistic Materials for Temporary Wooden Building Envelopes

Barone,

Gaujena,

Vilnitis

2023

Advances in Science and Technology

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Human security remains a topical issue, especially on the country borders where temporary houses are often used. Optimally, people should be provided with ordinary, habitable, easy-to-build, possibly portable buildings and ballistically protected. However, there is a lack of studies addressing ballistic building materials for the walls. In the scope of this study, ten ballistic materials: sand walls, concrete, steel plates, ceramic, glass fibreboards, wood (plywood, cross-laminated timber), ultra-high molecular weight polyethylene (UHMWPE) boards, aramid boards, carbon fibre boards, and gypsum plasterboard are reviewed, and their wall constructions are compared. This paper aimed to analyse bulletproof materials and to nominate the best bulletproof walls according to three required aspects - price, thermal transmittance, and weight. This is a review article that could help stakeholders to choose the appropriate ballistic material for high-risk applications.

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Section: Ultra-high Molecular Weight Polyethylene (Uhmwpe)mentioning

confidence: 99%

Literature Review of Applicable Ballistic Materials for Temporary Wooden Building Envelopes

Barone,

Gaujena,

Vilnitis

2023

Advances in Science and Technology

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Laser Desorption Ionization of Large Condensed Polycyclic Aromatic Hydrocarbons in Petroleum Pitch and Thermally Treated Products

et al. 2022

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Laser desorption ionization (LDI) mass spectrometry has been widely applied for the analysis of pitch-related materials. LDI is particularly useful when samples have very low solubility. However, LDI conditions, such as laser power output, can have significant impact on the resulting mass spectra. In this work, we examined the LDI of coronene and two petroleum pitch samples, a M-50 isotropic pitch and a thermally treated M-50 pitch that contained a mesophase. LDI at varying laser power is coupled to ultrahigh-resolution Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) to determine the impact of laser power on the elemental compositions of the pitch samples. Coronene is shown to form large polycyclic aromatic hydrocarbon (PAH) oligomers at high laser powers. Variations in laser power clearly affect mass distributions and compound-type distributions of the pitch samples. The impact of laser power is more significant and visible for the thermally treated pitch sample, where increased laser power generated high levels of fully dealkylated (or denuded) polycyclic aromatic hydrocarbons (dPAHs) and fullerenes. The presence of two types of PAH ions containing even and odd numbers of hydrogen atoms were observed. Even-hydrogen-number PAHs are molecular ions produced by direct laser ionization. The origins of odd-hydrogen-number PAHs are more complicated. They can result from dealkylation of larger PAHs, protonation of the parent molecule, and/or ionization of neutral PAH radicals. The latter can be a significant contributor to the odd-hydrogen-number PAHs. For analytical applications, a balance in laser power is needed to vaporize the non-volatile pitch molecules while also minimizing potential secondary thermal reactions during the LDI process. When laser power is controlled at a similar level, LDI–MS provides useful information to understand pitch compositional change from thermal treatment.

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Carbon Fibers

Cited by 2 publications

References 94 publications

Literature Review of Applicable Ballistic Materials for Temporary Wooden Building Envelopes

Literature Review of Applicable Ballistic Materials for Temporary Wooden Building Envelopes

Laser Desorption Ionization of Large Condensed Polycyclic Aromatic Hydrocarbons in Petroleum Pitch and Thermally Treated Products

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