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In terms of society and culture the Edo era in Japanese history was a vibrant and rich time. The evolution of Japanese traditional armor technology and armor culture achieved its pinnacle with the entry of Western technology into the contemporary age and the absorption of Chinese culture giving rise to the distinctive Japanese system of Nanban Dō. The Metropolitan Museum of Art in New York the USA has a sizable collection of ancient weapons and armor that spans geographies and covers various historical eras of Asian and European armor including a considerable portion of Japanese armor. This creates objective conditions for the comparison study of Japanese armor structure and form. We summarized and compared the Nanban Dō and the Asian and European armor collections of the Metropolitan Museum of Art in the United States in this article using historical analysis documentary analysis and case study techniques. It is found that the paradigm shift at different stages of the development of Nanban Dō was based on the different ways of acquiring and transforming foreign cultures in the changing contexts of the times and the timely innovation in the later critical acceptance. The following conclusions were obtained from the study. First the paradigm development of Japanese Nanban Dō was related to the level of productivity national military power and aesthetic trends of the times and was also inseparably related to the history of political and cultural exchanges. The paradigm transformation path of design imitation and re-creation of Japanese made Nanban Dō was a process of restatement-transformation-breaking and in this process a vigilance for civilizational assimilation was always maintained. Second East armor and West armor were not separate systems that developed independently of each other. The evolution of the paradigm of the Edo period's Japanese made Nanban Dō was an attempt by craftsmen from various regions to find a scientific balance between the aesthetics of Edo armor at a time when Eastern and Western cultures were colliding fiercely and at the will of the ruling class and in the environment where Western technology and Eastern culture intermingled the Japanese made Nanban Dō exhibited characteristics of an experimental artwork. Third the traditional armor culture of East Asia is a genealogical structure built around China and the in-depth study and development of the Japanese Nanban Dō has positive significance for the study of armor in China and even East Asia. We treat the Metropolitan Museum of Art as a historical environment of multicultural interactions search for internal links in the subtleties summarize and analyze the different formal changes of the Edo period and the Japanese made Nanban Dō paradigm in different historical stages and analyze the progressive development of this form in depth and in all aspects so as to find new possibilities for the study of East Asian armor art. [ABSTRACT FROM AUTHOR]

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Copyright of Acta Materiae Compositae Sinica is the property of Acta Materiea Compositae Sinica Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of China Textile Leader is the property of China Textile Information Center and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The normal penetration of explosively formed penetrator(EFP) into armor steel is test and simulated to obtain the origin and axial position of behind-armor debris(BAD) with bigger kinetic energy. The axial distribution of velocity and mass of BAD generated during the normal penetration of EFP into armor steel under the conditions of different thicknesses of target(30-70 mm) and different impact velocities of EFP(1650-1 860 m/s) were analyzed by the simulation method. The results indicate that the velocities of BAD from target and EFP increase approximately linearly with its axial position,the slope of envelope line is also constant when the target thickness or impact velocity of EFP is constant,and the intercept of envelope lines is affected weakly by debris origin(generated by target or EFP); the heavy(> 10 g) BADs from target are in the middle of BAD cloud or close to target,and the heavy(> 10 g) BADs from EFP are far from target; and the BADs with bigger kinetic energy are generated by EFP and far from target. [ABSTRACT FROM AUTHOR]

In order to cope with armored target with double explosive reactive armor, it is necessary to study the field of explosive reactive armor systematically. Based on the research on the flying plate motion law of the double explosive reactive armor, a theoretical model of applied field about double explosive reactive armor has been developed. Using the model, reaction time of double-layer explosive reactive armor's applied field has been studied under the conditions of different arranged angles and wedge angles. The flash X-ray test is accomplished to verify the theoretical results. The results show that the arranged angle and wedge angle have a larger influence on explosion field, in the certain range, making reaction time of applied field improved about 1.75 times. The calculation results have a good fit to the experiment results. [ABSTRACT FROM AUTHOR]

In order to improve the survival ability of armored vehicles in the war, the protecting technology has been attached importance and developed completely by the world military powers. The paper presented the research state and protecting level of modern armor, and enumerated protecting furnishment of advanced armored vehicles, and summarized the research state and level of key protecting technology-armor material. After introducing situation of armor protecting technology, taking the research content of U. S. and U. K., the development trend to the modern armor technology-synthesis protection system were analyzed. [ABSTRACT FROM AUTHOR]

Low-velocity ballistic experiments were carried out to study the perforation-resistant mechanisms of warship topside composite armor system, which was simulated by composite laminates at the front and homogeneous steel plates at the back. Failure modes and energy absorbing mechanisms were investigated and the influence of the area density of front composite armors on total perforation resistance of combined targets was analyzed. Based on the experiments, an equation was obtained to predict the residual velocities in the case of low-velocity perforation of combined targets by hemispherical-nosed projectiles according to the failure modes of the targets. The results show that under low velocity perforation, combined targets mainly exhibit local damage. A few amounts of fiber at the impact side of front composite armor are sheared by the projectile. Failure modes of front composite armors are mainly fiber tensile rupture while for steel backing plates, failure modes are primarily petaloid damage. The whole energy-absorbing capability of combined targets increases with increasing the area density of front composite armors. It is shown that theoretical predictions coincide with the experimental results in terms of residual velocities. [ABSTRACT FROM AUTHOR]

The process of formation and penetration against water-partitioned armor of explosively formed projectiles is studied. The flight characteristics and law of penetration are studied with high speed photography and electric probe technique. Experimental results showed that shaped charge with variational-wall-thickness hemispherical liner may be beneficial to the penetration into water-partitioned armor and the results concluded. Provide some valuable advices for the design of shaped charge configuration of torpedo warheads. [ABSTRACT FROM AUTHOR]