К настоящему времени накоплен большой объём калориметрических данных о теплоте (энергии) взрыва Q различных взрывчатых веществ (ВВ) и взрывчатых составов (ВС). Получены зависимости Q от начальной плотности ВВ Q(ρ0). Однако, на практике давление детонации в основном заряде можно менять, вызывая пересжатую детонацию, за счёт инициирования основного заряда мощным ВВ, поэтому практический интерес представляют зависимости теплоты взрыва от давления детонации Q(Р), которые можно получить на основе имеющихся зависимостей Q(ρ0) для индивидуальных ВВ, распространив их на ВС. Приведена методика определения зависимостей для расчёта теплоты взрыва различных ВС, включая алюминийсодержащие, как при нормальной так и при пересжатой детонации A large volume of calorimetric data on the heat energy Q of explosion for various explosives (Es) and explosive compositions (EC) has been accumulated by now. The dependences of Q on the initial ES density Q (ρ0) are obtained. However, the detonation pressure in the base charge can be changed in practice causing super compressed detonation, due to the initiation of the base charge by a powerful explosive; therefore, the dependences of the explosion heat on the detonation pressure Q (P), which can be obtained on the basis of the available dependences Q (ρ0) for individual explosives is of practical interest as they can be applied to EC. A method to determine the dependences for calculating the heat of explosion of various aircraft, including aluminum-containing ones, both during normal and super compressed detonation is presented.
The article investigates the possibilities of using a 3D tomograph with a limited-sizes registering screen for detecting arbitrarily oriented crack-like defects in large industrial objects. Circular and spiral scanning schemes are considered, the principal possibility of detecting defects in the case of two-pass spiral scanning and a registering screen covering half of the view field of the test object cross-section is shown. The performance of the 3D reconstruction algorithm for the selected scanning method has been demonstrated.
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