Strong explosion near a parallelepipedic structure

Trélat, Sophie; Sochet, Isabelle; Autrusson, B.; Loiseau, Olivier; Cheval, K.

doi:10.1007/s00193-006-0069-3

Cited by 23 publications

(9 citation statements)

References 2 publications

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“…On the other hand, in nearfield area, especially with the higher explosive charge we tested (64 g), every Kistler (piezoelectric) pressure transducer reported a continuous depression after the passage of the wave, during the negative phase of the signal, which makes the signals recorded impossible to be processed when the characteristics of the negative phase are investigated. This effect has already been observed with test gaseous bubbles detonation in near-field measurements (Trélat et al, 2007).…”

Section: Comparison Of Pressure Transducer Technologiesmentioning

confidence: 68%

Laboratory scale tests for the assessment of solid explosive blast effects. Part I: Free-field test campaign

Cheval

Loiseau

Vala

2010

Journal of Loss Prevention in the Process Industries

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Section: Comparison Of Pressure Transducer Technologiesmentioning

confidence: 68%

Laboratory scale tests for the assessment of solid explosive blast effects. Part I: Free-field test campaign

Cheval

Loiseau

Vala

2010

Journal of Loss Prevention in the Process Industries

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“…Signals were sent to an oscilloscope and transferred to a computer for data processing. A full description of the experimental setup can be found in [2,3]. …”

Section: Methodsmentioning

confidence: 99%

Analysis of reflected blast wave pressure profiles in a confined room

2012

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International audienceTo understand the blast effects of confined explosions, it is necessary to study the characteristic parameters of the blast wave in terms of overpressure, impulse and arrival time. In a previous study, experiments were performed using two different scales of a pyrotechnic workshop. The main purpose of these experiments was to compare the TNT equivalent for solid and gaseous explosives in terms of mass to define a TNT equivalent in a reflection field and to validate the similitude between real and small scales. To study the interactions and propagations of the reflected shock waves, the present study was conducted by progressively building a confined volume around the charge. In this way, the influence of each wall and the origins of the reflected shock waves can be determined. The purpose of this paper is to report the blast wave interactions that resulted from the detonation of a stoichiometric propane-oxygen mixture in a confined room

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“…the negative phase of the signal, which makes the signals recorded impossible to be processed when the characteristics of the negative phase are investigated. This effect has already been observed with test gaseous bubbles detonation in nearfield measurements [7]. As can be read in open literature concerning piezoresistive and piezoelectric pressure transducers, the two technologies are well suited for detonic experiments.…”

Section: Resultsmentioning

confidence: 52%

Laboratory scale tests for the assessment of solid explosive blast effects

Cheval

Loiseau

Vala³

2008

WIT Transactions on the Built Environment

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The definition of blast loads applying to a complex geometry structure is, nowadays, still a hard task when numerical simulation is used, essentially because of the different scales involved: as a matter of fact, modelling the detonation of a charge and its resulting load on a structure requires one to model the charge itself, the structure and the surrounding air, which rapidly leads to large size models on which parametrical studies become unaffordable. So, on the basis of the Crank-Hopkinson's law, an experimental set-up has been developed to support reduced scale structures as well as reduced scale detonating solid charges. As a final objective, the set-up must be used to produce the entry data for numerical assessments of the structure resistance.This set-up is composed of a modular table, sensors and targets and has been designed to conduct nondestructive studies. In the context of security, the general aim is to study the effects of detonation shock waves in the vicinity of test installations and to test various shock wave mitigation means that could be implemented for the protection of facilities in sensitive locations. In particular, the set-up offers the possibility of measuring the loading in terms of pressuretime curves, even for very complex situations like multiple reflections, combination and diffraction.The present paper summarizes the development of the set-up, as well as the first tests performed. The main features of the table, the instrumentation and the pyrotechnics are given. Also, the paper summarizes a first qualification test campaign that was conducted in the year 2006. In this campaign, free field blast tests (i.e. blast tests performed without structures) have been conducted. Overpressure maxima, arrival time of the shock wave and impulse are presented as nondimensional characteristics of the pressure time history. The results obtained have been found to be in good agreement with reference curves available from the open literature.

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Strong explosion near a parallelepipedic structure

Cited by 23 publications

References 2 publications

Laboratory scale tests for the assessment of solid explosive blast effects. Part I: Free-field test campaign

Laboratory scale tests for the assessment of solid explosive blast effects. Part I: Free-field test campaign

Analysis of reflected blast wave pressure profiles in a confined room

Laboratory scale tests for the assessment of solid explosive blast effects

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