Influence of the Pyrotechnic Igniter Composition Aging on Explosion Parameters of Dispersed Dusts

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27200%2F21%3A10248895" target="_blank" >RIV/61989100:27200/21:10248895 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.mdpi.com/2076-3417/11/22/10728/htm" target="_blank" >https://www.mdpi.com/2076-3417/11/22/10728/htm</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/app112210728" target="_blank" >10.3390/app112210728</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Influence of the Pyrotechnic Igniter Composition Aging on Explosion Parameters of Dispersed Dusts

Popis výsledku v původním jazyce

A commercially available pyrotechnic igniter was used according to the EN 14034 and ASTM E1226a Standards to study the explosiveness of dispersed dusts. Its pyrotechnic composition consists of 1.2 g of zirconium (40% wt.), barium peroxide (30% wt.) and barium nitrate (30% wt.). The energy released during the combustion of that amount of composition is 5 kJ. The article investigates the influence of aging of the pyrotechnic composition in the igniter on its initiation parameters. In the study, igniters of different years from date of manufacture were used: Igniter 1, manufactured in 2021 (less than 1 year from date of manufacture), and Igniter 2 (more than 2 years from date of manufacture). The study was performed in the KV 150M2 explosion chamber with a volume of 365 L and the 20 L sphere chamber with a volume of 20 L. A standard sample of Lycopodium clavatum was used in the KV 150M2 explosion chamber. Magnesium and benzoic acid were used as the samples in the 20 L sphere explosion chamber. The experiment showed that the explosion pressure P-max of the igniter with more than 2 years from date of manufacture decreased by up to 10%, while the value of the explosion constant K-st decreased by up to 40%. The attained results proved that aging of igniters affects their explosion parameters and measurement accuracy.

Název v anglickém jazyce

Influence of the Pyrotechnic Igniter Composition Aging on Explosion Parameters of Dispersed Dusts

Popis výsledku anglicky

A commercially available pyrotechnic igniter was used according to the EN 14034 and ASTM E1226a Standards to study the explosiveness of dispersed dusts. Its pyrotechnic composition consists of 1.2 g of zirconium (40% wt.), barium peroxide (30% wt.) and barium nitrate (30% wt.). The energy released during the combustion of that amount of composition is 5 kJ. The article investigates the influence of aging of the pyrotechnic composition in the igniter on its initiation parameters. In the study, igniters of different years from date of manufacture were used: Igniter 1, manufactured in 2021 (less than 1 year from date of manufacture), and Igniter 2 (more than 2 years from date of manufacture). The study was performed in the KV 150M2 explosion chamber with a volume of 365 L and the 20 L sphere chamber with a volume of 20 L. A standard sample of Lycopodium clavatum was used in the KV 150M2 explosion chamber. Magnesium and benzoic acid were used as the samples in the 20 L sphere explosion chamber. The experiment showed that the explosion pressure P-max of the igniter with more than 2 years from date of manufacture decreased by up to 10%, while the value of the explosion constant K-st decreased by up to 40%. The attained results proved that aging of igniters affects their explosion parameters and measurement accuracy.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

21100 - Other engineering and technologies

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Applied Sciences

ISSN

2076-3417

e-ISSN

—

Svazek periodika

11

Číslo periodika v rámci svazku

22

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

11

Strana od-do

—

Kód UT WoS článku

000727337800001

EID výsledku v databázi Scopus

2-s2.0-85119273660