Arrowhead’s impact on the human skull , Weapon and trauma in the Bronze Age
Introduction: Weapons and Trauma in the Bronze Age The Bronze Age (approximately 3300–1200 BCE, varying by region) marked a transformative period in human history, characterized by the widespread use of bronze for tools, weapons, and armor. As societies became more complex and conflicts more frequent, warfare and interpersonal violence became prominent aspects of Bronze Age […]
Numerical investigation of concrete-filled double skin steel tubular structure subjected to underwater explosion
Concrete-filled double-skin steel tubular (CFDST) structures are a type of composite structure that consists of two concentric steel tubes (an inner and outer steel tube) with concrete filled in the annular space between them. These structures are increasingly used in offshore, marine, and defense-related applications due to their excellent strength-to-weight ratio, enhanced energy absorption capacity, […]
Analysis of high-low velocity impact response of GLAREs
Introduction In modern aerospace engineering and defense industries, impact resistance of materials is a critical factor in ensuring structural safety and durability. One class of materials that has gained significant attention for its superior impact performance is GLARE (Glass Laminate Aluminum Reinforced Epoxy). GLARE is a type of Fiber Metal Laminate (FML) that combines aluminum […]
Pull-Out test analysis of a ribbed steel bar from the UHPC
1. Introduction The Pull-Out Test is a commonly used experimental method to evaluate the bond behavior between reinforcement (typically steel bars) and concrete. When using Ultra-High Performance Concrete (UHPC), a class of advanced cementitious composite materials with superior mechanical and durability properties, the bond characteristics can differ significantly from conventional concrete due to UHPC’s dense […]
Cold Spray analysis of Depositing Al-Based Metallic Coatings onto PEEK Polymer Substrate
Introduction The integration of metal coatings with polymer substrates has become increasingly important in advanced engineering applications, especially in aerospace, automotive, and electronics industries. Among various polymers, Polyetheretherketone (PEEK) stands out due to its excellent mechanical strength, chemical resistance, thermal stability, and biocompatibility. However, to enhance its surface functionality—such as electrical conductivity, thermal management, and […]
Johnson–Holmquist-II model of annealed glass in the dynamic compression test
The Johnson–Holmquist-II (JH-2) model is a widely used constitutive model for predicting the behavior of brittle materials, such as annealed glass, under high-strain-rate conditions, including dynamic compression tests, impacts, and explosions. It was developed by G. R. Johnson and T. J. Holmquist to address the limitations of traditional material models in capturing the complex response […]
Analysis of the blast protection wall system( wood cover-soil)
Terrorism has become a major challenge for the world. Terrorist organizations have raised their activities and their attacks in recent years using explosives. These attacks have left numerous numbers of victims, wreaked massive havoc on basic infrastructure, and increased global concern about the nature of these attacks. Blast wall protection systems can provide a required […]
Analysis of the laced reinforced concrete with wood cover under air blast load
Introduction The structural performance of buildings and protective systems under extreme loading conditions, such as air blast loads, has become an area of critical interest, particularly for infrastructure security, military applications, and high-risk industrial facilities. One innovative solution to enhance the blast resistance of concrete structures is the use of laced reinforced concrete (LRC) combined […]
Compression test of middle long CFST column with inner I-shaped CFRP Profile
Introduction Concrete-Filled Steel Tube (CFST) columns are widely utilized in modern structural engineering due to their superior axial load-bearing capacity, ductility, and fire resistance. These composite members synergize the compressive strength of concrete and the confinement effect of the surrounding steel tube, making them highly effective in high-rise buildings and bridge piers. To further enhance […]
Bending test analysis of an aluminium-timber composite beam
Introduction Composite beams, made by combining two or more distinct materials, offer unique mechanical advantages by utilizing the strengths of each constituent. One such example is the aluminium-timber composite beam, which merges the high strength-to-weight ratio and corrosion resistance of aluminium with the renewable, lightweight, and ductile properties of timber. The bending test is a […]
