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Description
Explosive Depth Hardening (EDH) is an industrial process in which plastic explosives are used to com press and work-harden steel. Depending on the steelthat needs hardening, the energy equivalent of up to 10 kg of TNT is used. Depending on the shipments, between one and 4 rails are hardened simultaneously.The nearest noise sensitive receptor is approximately 2 km from the source, and under specific weather conditions, EDH has the potential to exceed 130 dB(C)peakat this location. This noise source is also known to be audible and identifiable at receptors more than 10 km away.In this study, a comprehensive measurement campaign has been undertaken to investigate the propagation of the pulse in the non-linear and linear acoustic regions. These field trial measurements were conducted in-situ on the DNV Spadeadam site during their usual daily operations. The characteristics of the blast wave, including peak pressure, shock duration, and shock speed, have been measured using piezoelectric pressure sensors.