National Defense AcademySchool of System Engineering
Dept. of Civil and Environmental Engineering

Design Engineering Laboratory

To maintain social infrastructure facilities, it is necessary to establish a rational design method that effectively utilizes the properties of materials such as steel and concrete and efficiently combines their structural elements. Accordingly, it is crucial to elucidate the static and dynamic mechanical properties of structures. In this field of education, to acquire basic skills in structural engineering, earthquake resistance engineering, and structural design engineering, students will learn the static and dynamic behavior of structures, as well as their evaluation methods, via basic theory and experiments. Regarding the research, we are conducting theoretical and experimental studies with the objective of establishing protective design methods for structures that are exposed to impact loads, such as explosion and collision loads.

Teaching staff

Masuhiro Beppu
ProfessorMasuhiro Beppu Specialized fieldImpact Engineering, Reinforced Concrete Engineering SubjectsStructural Mechanics I, Laboratory in Structural and Concrete Engineering, Structural Design and Drawings, Introduction to Science and Engineering, Engineering Mechanics, Basic Seminar Emailbeppu[at]nda.ac.jp Web(Link to the personal page)
Hiroyoshi Ichino
Associate ProfessorHiroyoshi Ichino Specialized fieldImpact Engineering, Explosion Safety Engineering SubjectsExercises in Structural Mechanics I, Vibration and Seismic Engineering, Laboratory in Structural and Concrete Engineering, Structural Design and Drawings, Civil Engineering English I, Graphic science Emailichino[at]nda.ac.jp

Main Experimental Equipment

Large-scale falling weight type testing device

Experiments involving dropping of various objects from high places can be performed.

Photograph of the large-scale falling weight-type testing device1
Photograph of the large-scale falling weight-type testing device2 Photograph of the large-scale falling weight-type testing device3

Types of high-pressure pneumatic projectile launchers

Experiments that involve collision of objects flying at high speeds with air pressure can be performed.

Photographs of various high-pressure pneumatic projectile launchers1 Photographs of various high-pressure pneumatic projectile launchers2

Split Hopkinson bar test equipment

Experiments that study the dynamic material strength using wave characteristics can be performed.

Photograph of split Hopkinson bar test equipment1 Photograph of split Hopkinson bar test equipment2

Main Research Themes

Research on the protective design of structures subjected to flying object collision

Research on the impact resistance of reinforced concrete

We are currently studying the reinforcing effect of short-fiber reinforced concrete and its mechanism.

Research on the impact-resistant design method for steel members

We are currently studying the impact behavior and fracture mechanism of steel materials.

Research on the protective design of the structures subjected to explosion

Research on the nature of blast pressure and the destruction of structures

We are currently studying the intensity, distribution, and temporal characteristics of blast pressure, as well as the mechanism of the destruction of structures by blast waves.

We are currently studying the characteristics of earth pressure, blast waves spouting out of the ground, and vibrations, when an explosion occurs underground.

Research on explosion-load buffer system

We attempt to develop an explosion buffer system.

Collection of technical data

We collect technical data on the impact resistance of metals, fibers, resins, concrete, etc.