Protective Sportswear

Fencing Plastron Puncture Resistance & Safety Margin

The standard is written for a snapped blade, not a button. Halve the tip radius and a third of the resistance goes with it.

Protective Layer Construction
g/m²
no.
N per g/m²

Measured on the actual fabric at the reference tip radius.

Threat & Requirement Blade
mm
mm

Tip radius at which the specific strength was measured.

N

Puncture Resistance

— N

Force the construction withstands against the specified tip

Safety Check

Total Areal Density
— g/m²
Safety Factor
— ×
Margin Over Requirement
— N
Areal Density Needed
— g/m²
Layers Needed
— no.

Layers are treated as adding linearly, which flatters a real stack: loosely assembled layers slip and share load poorly, and the second layer rarely contributes its full share. This is also a quasi-static model and a lunge is dynamic, with the blade arriving at speed against a moving body — the standard test method exists precisely because that combination is not predictable from fabric properties. Layers needed is returned as a fraction and must be rounded up to a whole layer. **This is a decision-support estimate only.** Fencing protective equipment is life-safety equipment governed by FIE and national federation standards, and conformity can only be established by certified testing of the finished garment.

Fencing Plastron Puncture Resistance & Safety Margin — free, with the formula and a worked example, at Textile School.