E. Contestabile ABSTRACT: There are times when the legal system requires so-called expert witnesses. Whether it is with regard to terrorist or criminal activities or accidents, the expert is often confronted with explaining the dreaded term “detonation”. The attempt to explain such a catastrophic event often brings about the use of similes. In this paper, …
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Category:Original articles
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A Brief Introduction to Noise and Data Filtering
L. Weinman ABSTRACT: This brief article examines some aspects of noise and the effects of filters applied to data. Keywords: signals, data acquisition, noise, data filter, digital filter, pyrotechnic, experimental design Ref: JPyro, Issue 14, 2001, pp40-44 (J14_40)
Our Present Knowledge of the Chemistry of Black Powder
Ian von Maltitz ABSTRACT: Black Powder has been around for centuries and has had a profound influence on the history of the world. Over this time, a considerable amount of knowledge has been gained that not only sheds light on the chemistry of Black Powder but also on other pyrotechnic reactions. This knowledge cannot be …
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Thermal Techniques Used in the Hazard Evaluation of Pyrotechnics
P. D. Lightfoot, R. C. Fouchard, A.-M. Turcotte, Q. S. M. Kwok and D. E. G. Jones ABSTRACT: A hazard assessment provides important information for determination of safe conditions for the manufacture, storage and transportation of pyrotechnics. Sensitivity to thermal stimuli is an important aspect of an overall hazard assessment. This paper describes a number …
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Hazards Associated with the Storage of Fireworks
Roy Merrifield ABSTRACT: Large quantities of a whole range of materials, including fireworks, are moved around the world in steel ISO containers. In recent years in the UK, manufacturers and retailers have used such containers to store fireworks. It has been long recognised that confinement can increase the hazard of energetic materials such as pyrotechnics …
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Chapter III — Accroides
The following article was reprinted from The Technology of Natural Resins, by C. L. Mantell, C. W. Kopf, J. L. Curtis, and E. M. Rogers, John Wiley & Sons, Inc. (1942) pp 14–21. Chapter III — Accroides: Gum accroides is the resinous product obtained from various members of the species Xanthorrhoea of the natural order …
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Air Pollutant Emissions from Power Plants
Martha Joseph, Cynthia Johnston, and Candice Smith An examination of the issue of pollution resulting from fireworks displays in contrast to power plant emissions was chosen as a seminar topic during a pyrotechnic chemistry workshop, sponsored by the Partnership for the Advancement of Chemical Technology (PACT) at Miami University, Middletown, Ohio, July 2001. ——————————————————————————– Ref: JPyro, …
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A Note on the Design of Experiments
A Note on the Design of Experiments L. Weinman Introduction: In this note, we will speak about the general design of an experiment and some factors to be considered. An experiment is used here to mean the deliberate causing of some physical event combined with the taking of data related to the event and the …
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Multi-Wavelength Laser Opacity Study of a Hybrid Rocket Plume
A. P. Chouinard, A. J. Adams, A. M. Wright, and M. K. Hudson ABSTRACT: An instrumentation system was developed to measure the opacity of a hybrid rocket plume as a function of optical wavelength. The source consisted of collineated beams from two lasers, providing seven wavelengths in a single probe beam. Detection was accomplished with …
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Studies of Electric Match Sensitiveness
K. L. and B. J. Kosanke ABSTRACT: The sensitiveness of a collection of ten electric match types, from four suppliers, was determined under conditions intended to reflect their actual use to ignite fireworks displays. The measurements included determinations of impact, electrostatic discharge (ESD), friction, and thermal sensitiveness. The ESD tests considered discharges both through the …
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