Dynamic Behavior of Materials

Dynamic Behavior of Three PBXs with Different Temperatures (Dynamic Behavior of Materials)

ABSTRACT Polymer-bonded explosives (PBXs) came into being and are widely used as energetic fillings in many systems as they are more chemically and mechanically stable than traditional ones. There are three kinds of materials named by PBX1, PBX2 and PBX3, the last two of which are newly invented. To investigate the mechanical properties of newly […]

Dynamic Compressive Properties of a PBX Analog as a Function of Temperature and Strain Rate (Dynamic Behavior of Materials)

ABSTRACT The compressive strength behavior of a Polymer Bonded Explosives (PBX) analog was measured as a function of temperature (25°C to 95°C) and strain rate (100 to 700 s-1) using the split Hopkinson pressure bar (SHPB).The result exhibits the flow stress of the PBX analog is strong dependency on temperature and strain rate. According to […]

Dynamic Response of Shock Loaded Architectural Glass Panels (Dynamic Behavior of Materials) Part 1

Abstract A controlled study has been performed to understand fracture and damage mechanisms in glass panels subjected to air blast. A shock tube apparatus has been utilized to obtain the controlled blast loading. Five different panels, namely plain glass, sandwiched glass, wired glass, tempered glass and sandwiched glass with film on both the faces are […]

Dynamic Response of Shock Loaded Architectural Glass Panels (Dynamic Behavior of Materials) Part 2

Experimental results DIC Analysis The DIC technique (as discussed in section 2.4) is used to obtain the out-of-plane deflections and the in-plane strains on the back surface for all the five panels. The speckle pattern is applied onto the back face of the panels (fig. 5) which are subjected to shock loading. The high speed […]

A Dynamic Punch Method to Quantify the Dynamic Shear Strength of Brittle Solids (Dynamic Behavior of Materials)

ABSTRACT Shear strength is a basic material parameter of rocks. It plays a vital role in the applications field of mining engineering and geotechnical engineering. Although static standards for measuring static shear strength of rocks are available, the shear behavior of rocks under the dynamic loading it is not well understood. This paper presents a […]

A Sensored Projectile Impact on a Composite Sandwich Panel (Dynamic Behavior of Materials)

ABSTRACT Common impact events occurs between a single target and a single projectile, and traditionally the targeted is of most interest. Various sensors, such as strain gauges and force transducers, are commonly applied to the target in order to understand and record the impact event through the prospective of the target [1,2]. This approach leaves […]

Cut Resistance and Fracture Toughness of High Performance Fibers (Dynamic Behavior of Materials)

A study to understand the fundamentals of fiber mechanics during cutting has been conducted. In the current study, high performance organic and inorganic fiber types are examined during different modes of cut testing. The scope of the current study is to explore the relationship between fiber type on cut resistance and to provide comprehension of […]

Kolsky Tension Bar Techniques for Dynamic Characterization of Alloys (Dynamic Behavior of Materials)

Dynamic stress-strain response associated with damage and failure mechanisms of alloys is desired to be quantitatively determined. Dynamic tensile characterization has been demonstrated an efficient method for such an investigation. However, reliable dynamic tensile characterization relies on appropriate experimental instruments and procedure. In this study, we employed a newly developed Kolsky tension bar to characterize […]

Prediction of Dynamic Forces in Fire Service Escape Scenarios (Dynamic Behavior of Materials) Part 1

ABSTRACT When firefighters become trapped on elevated floors in a burning structure, their only option for escape is often through an exterior window utilizing an escape rope system. The rope becomes a firefighter’s lifeline until he can either rappel to safety or be rescued by other means. Quantifying the dynamic loading experienced by the anchor, […]

Prediction of Dynamic Forces in Fire Service Escape Scenarios (Dynamic Behavior of Materials) Part 2

EXPERIMENTAL TESTING RESULTS AND DISCUSSION Initial tests are categorized as Scenario C, where the rope is anchored across the room from the exit window. The length of rope between the anchor and simulated sill is constant at 80 cm, while the length of rope deployed over the sill (slack length) is varied along with the […]

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