Blast

The focus of this report is on structural aspects of designing or evaluating buildings for blast resistance. Generally this involves quantifying the blast overpressures that could result from accidental explosions, establishing the design blast loads from these overpressures, setting the structural performance requirements, and designing the building structure to withstand these loads within the required performance limits. Blast resistant design, or the structural strengthening of buildings, is one of the measures an owner may employ to minimize the risk to people and facilities from the hazards of accidental explosions in a plant. Other mitigative or preventive measures, including siting (adequate spacing from potential explosion hazards) and hazard reduction (inventory and process controls, occupancy limitations, etc.), arc not covered in this report.

This book examines blast waves—their methods of generation, their propagation in several dimensions through the real atmosphere and layered gases, and their interactions with simple structures—thereby providing a broad overview of the field. The intended audience has a basic knowledge of algebra and a good grasp of the concepts of conservation of mass and energy.

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This book proposes the concept of a multi-layer pavement system to fulfill the blast resistance requirement for pavement design. It also presents a damage pattern chart for multi-layer pavement design and rapid repair after blast load. Such a multi-layer system consists of three layers including asphalt concrete (AC) reinforced with Geogrid (GST) at the top, a high-strength concrete (HSC) layer in the middle, and engineered cementitious composites (ECC) at the bottom. A series of large-scale laboratory impact tests were carried out to prove the usefulness of this concept and show its advantages over other conventional pavement system. Furthermore, field blast tests were conducted to show the actual behavior of this multi-layer pavement system subjected to blast load under real-world conditions.

This book compiles a variety of experimental data on blast waves. The book begins with an introductory chapter and proceeds to the topic of blast wave phenomenology, with a discussion Rankine-Hugoniot equations and the Friedlander equation, used to describe the pressure-time history of a blast wave. Additional topics include arrival time measurement, the initiation of detonation by exploding wires, a discussion of TNT equivalency, and small scale experiments.

Rice blast, caused by the fungal pathogen Magnaporthe grisea, is one of the most destructive rice diseases worldwide and destroys enough rice to feed more than 60 million people annually. Due to high variability of the fungal population in the field, frequent loss of resistance of newly-released rice cultivars is a major restraint in sustainable rice production. In the last few years, significant progress has been made in understanding the defense mechanism of rice and pathogenicity of the fungus.

Produced and directed by legendary metal drummer Derek Roddy, Blast Beats Evolved explores the development and mechanics of modern extreme drumming. The DVD features examples and exercises for Blast Beats, Skank Beats, Bomb Blasts, Hammer Blasts and Freehand Blasts, plus a comprehensive conditioning program for hands and feet, balance and endurance, and also includes five solo jams and performances of seven Serpents Rise songs—complete with minus-drums play-along tracks.