Fracture of the pbx 9501 high explosive

Author: heah

August undefined, 2024

WebThis a light gas gun to launch a projectile, which impacts work examines the effects of shear impact on the a plunger resting in contact with the explosive microstructure of PBX … WebAug 4, 2004 · In contrast to many brittle solids, crack initiation and propagation in PBX 9501 high explosive and its simulant are preceded by the formation and extension of a …

The Strength of Two HMX Based Plastic Bonded Explosives

WebWe present experiments that examine the combustion of mechanically and thermally damaged samples of PBX 9501. Mechanically damaged samples, damaged by quasi … WebJul 28, 2006 · The fracture process of a material denoted PBS 9501 sugar mock, a simulant of the PBX 9501 high explosive, was studied using the optical technique of Coherent Gradient Sensing (CGS) interferometry. art floral japonais ikebana

Materials Free Full-Text Modelling Microstructural Deformation and ...

WebSep 8, 2002 · Explosive crystals were found to fracture due either to cracks propagating from another region or internal defects. These observations are confirmed by the use of high–resolution moiré interferometry. This sensitive optical technique allows the deformation of the sample to be measured up to and including the point of failure. Web50 rows · PBX 9501: HMX 95%, BDNPA-F 2.5%: Estane 2.5%: High-velocity; nuclear weapons (W76, W78, W88). One of the most extensively studied high explosive … WebOct 11, 2024 · Sixteen experiments were performed on 1-inch thick discs of PBX 9501, with diameters of 1 in ch, 4.25 in ch, and 5 in ch. The explosive was compressed to a known … art fleming wikipedia

Combustion of Damaged High Explosives. National Technical …

Damage & Fracture of High-Explosive Mock Subject to Cyclic …

WebAug 1, 2005 · The purpose of this paper is to determine the microscopic cohesive law for particle/matrix interfaces in the high explosives PBX 9501. We first present the experimental study on fracture of the high explosive PBX 9501 in Section 2. Applying the digital image correlation technique to a modified compact tension specimen, we have … WebFeb 21, 2001 · Various microstructural mechanisms have been suggested for ignition in explosives subjected to impact by low-velocity projectiles. ... subjected to impact by low … art flamboyantWebFeb 27, 2024 · Note that both the measured stresses (allowing for a degree of scatter) for PBX-1 and PBX-2 are near identical, as is the hydrodynamic response (both in terms of U S –u p and P HD –u p) for PBX-1, PBX-2 and PBX 9501. This can be taken as a first indication that the mechanical response to shock loading in HMX based PBXs are largely … art for sale tauranga

"WebIn contrast to many brittle solids, crack initiation and propagation in PBX 9501 high explosive and its simulant are preceded by the formation and extension of a sizable bridging zone. In this investigation, fracture experiments on the high-explosive material, PBX 9501, were conducted. From the experimental measurement, we are able to … " - Fracture of the pbx 9501 high explosive

Fracture of the pbx 9501 high explosive

Measuring the stress-bridging law of a heterogeneous material

WebWe present experiments that examine the combustion of mechanically and thermally damaged samples of PBX 9501. Mechanically damaged samples, damaged by quasi-static compression, exhibit large, u0001200 mm … WebIt was also applied to the PBX 9502 high explosive to study the fracture process as a function of temperature (Liu and Thompson 2014) and to determine the fracture toughness as a function of ...

Did you know?

WebFeb 25, 2002 · Impact or thermal ignition of high explosives (HE) results in deformation that can lead to damage. Fractures or defects, combined with sufficient pressure, … WebMay 1, 2024 · In this paper, the dynamic fracture of explosives are conducted using a Kolsky bar. The Brazilian test, also known as a indirect tensile test or splitting test, is chosen as the test method. ... This data will be used to decrease federal-regulation-constrained machining time of the high explosive PBX 9501. The effects of machining parameters ...

WebAug 4, 2004 · ABSTRACT. In contrast to many brittle solids, crack initiation and propagation in PBX 9501 high explosive and its simulant are preceded by the formation and extension of a sizable bridging zone. In this investigation, fracture experiments on the high‐explosive … WebSep 8, 2024 · Plastic-bonded IDOX showed good agreement to PBX 9501 across these strain rates, justifying continued development and production as a mock. Get full access to this article. ... On the quantitative measurement of fracture toughness in high explosive and mock materials. Los Alamos, NM (United States): Los Alamos National Lab.(LANL), …

WebThe growth of cracks and their role in the formation of hot spots in explosives are addressed in a three-part discussion. First the method of generalized coordinates is used to represent crack dynamics with two ordinary differential equations for crack opening and growth. These account for both stable and unstable behavior. Second, the behavior of … WebFor the high explosive PBX 9501, the energy release due to catastrophic debonding of coarse (large) particles is equivalent to the free drop of the high explosive from a …

WebJan 1, 2010 · The high-rate response of the energetic was found to exhibit increased ultimate compressive fracture strength and elastic loading modulus with decreasing … artform matakanaWebJun 13, 2011 · Abstract. A cohesive finite element method (CFEM) framework for quantifying the thermomechanical response of polymer-bonded explosives (PBXs) at the … banarasi misthan bhandar kanpurWebIn this investigation, fracture experiments on a high explosive material (PBX 9501) were conducted using the digital image correlation technique. From the experimental measurement, we are able to determine quantitatively the stress-bridging law (or decohesion law), which characterizes the relationship between the bridging stress and the opening … banarasi motifsWebImpact or thermal ignition of high explosives results in deformation that can lead to fracture. Fracture, combined with high pressure, dramatically increases the available surface area and potentially changes the mode of combustion. Recent impact and cook-off experiments on PBX 9501 (HMX, octahydro-1,3,5,7- artful bandanasWebThe anomalous growth of the the fracture stress (the material’s spall strength) was determined by HEL was caused by phonon viscosity at high strain rates.5,11 As the temperature increased, the rise time of the plastic shock wave FIG. art forms of kerala in malayalam languageWebNov 4, 2024 · Sufficient localization of heat will lead to a nascent ignition hotspot in PBX 9501, and the ensuing post-ignition response may vary from extinguishment to detonation (via DDT). Predicting this post-ignition violence is particularly relevant for explosives safety. banarasi misthan bhandarWebAug 1, 2005 · We first present the experimental study on fracture of the high explosive PBX 9501 in Section 2. Applying the digital image correlation technique to a modified … art from scrap santa barbara