Beyond the Blast: Fragment and Splinter Protection

Visualization of splinters hiting the building and windows creating secondary splinters

An explosion does not have to strike a building directly to endanger the people inside. Fast-moving fragments can travel beyond the point of impact, causing serious injuries, penetrating building elements, damaging equipment, and disrupting essential services.

Fragment and splinter protection is an important consideration for buildings, critical infrastructure, protected spaces, and shelters. Understanding this threat starts with recognising that fragments are far from uniform.

Why Fragment Size Alone Does Not Define the Danger

The word “splinter” can suggest something small. In the context of explosions, it describes a much wider range of dangerous objects.

Fragments vary in size, mass, shape, material, and velocity. These characteristics affect how far they travel, how quickly they lose speed, what they can penetrate, and the damage they cause.

Mass and velocity influence the energy a fragment carries. Shape, orientation, and impact angle affect how that energy acts on a surface. Air resistance also affects fragments differently, so two objects travelling the same distance may retain very different levels of energy.

Even a small fragment can cause a severe or fatal injury. A larger fragment may damage structural components or essential equipment. Assessing the threat requires looking at these characteristics together.

Real splinters found after attack shows the different sizes and shapes of the splinters

Natural Fragments and Purpose-Made Fragmentation

Natural fragments form when an explosion breaks apart a weapon’s casing and components. The resulting pieces can vary widely in shape and mass.

Some drone and missile warheads also include purpose-made fragments or casings designed to break into controlled pieces. These features increase fragmentation effects beyond those produced by naturally breaking components. Depending on the warhead, fragmentation can occur alongside blast effects and a dedicated penetration mechanism.

The delivery platform alone therefore does not define the danger. Different weapons can create substantially different fragment threats.

Secondary Fragments: When the Surroundings Become a Hazard

An explosion can also turn surrounding materials into dangerous projectiles. Glass, masonry, metal fittings, and pieces of nearby equipment can become secondary fragments.

These objects can injure people, damage equipment, and create additional hazards inside buildings. Material may also break away from the inside face of a wall or protective barrier after an impact, potentially endangering occupants even if the original fragment does not pass through.

Effective protection must consider both incoming fragments and debris generated within the protected environment.

What Does “Splinter Protection” Mean?

There is no single universal level of performance described by the terms “fragment protection” or “splinter protection.” Different norms, standards, and test methods define and assess different threats.

Relevant test parameters may include:

• Fragment mass, dimensions, shape, and material.

• Striking velocity and impact angle.

• Number, spacing, and location of impacts.

• Penetration criteria and other acceptance requirements.

Some methods use standardised fragment-simulating projectiles to create repeatable test conditions. These represent defined threats rather than every possible fragment from an explosion.

Two products described as “splinter-resistant” may therefore offer different protection. A meaningful specification should identify the applicable standard, tested threat, and achieved performance.

Protecting Buildings, Structures, and Occupied Spaces

Fragment-resistant materials are only one part of an effective protective system. Overall performance also depends on coverage, connections, installation, and the treatment of vulnerable areas.

Walls, roofs, protective doors, glazing, joints, ventilation openings, and service penetrations all influence the protection of an occupied space. An inadequately protected opening can compromise the benefit of surrounding barriers.

For critical infrastructure and industrial facilities, fragment damage can also interrupt power, communications, ventilation, and other essential functions. Protecting equipment can therefore be important both for immediate safety and continued operation.

Requirements should reflect the expected threat, the surrounding environment, and the intended use of the building or protected space.

Fragment Protection and Blast Protection Must Work Together

Fragment resistance addresses the impact and penetration of flying objects. Blast resistance addresses explosion pressure and the forces acting on a structure.

Performance against one effect does not automatically establish performance against the other. Similarly, resistance to fragments does not establish protection against a direct weapon hit or a dedicated penetrator.

A comprehensive protection approach considers the relevant hazards together. For shelters, safe rooms, buildings, and critical facilities, this means coordinating protective materials, structural reinforcement, doors, windows, and openings within a clear project specification.

Atmas Group: Comprehensive Protection Solutions

Atmas Group provides protective technologies and reinforcement solutions for buildings, structures, protected spaces, and shelters. Available options include composite armour panels, blast mitigation fabrics, and structural blast reinforcement systems for new projects and upgrades to existing facilities.

We believe professional protection starts with understanding the complete threat. Focusing on fragments alone while overlooking blast or other relevant hazards can leave important gaps. Our approach considers project requirements and compatible protective measures together to help protect people and essential assets.

Explore Atmas Group’s ballistic and blast protection solutions to learn more about available systems and protection upgrades.