Sample 3

Mantra MK4Batch W25AIJuly 29, 2026

Breaking force

36.82kN

Force–time trace

The capture from the rig’s force channel, plotted against elapsed time.

Test details

Tested: Jul 29, 2026 · 16:33
Duration: 150.8s
Scan rate: 500.0Hz
Sample: 3
Study: Batch Report - Mantra MK4 - W25AI
Test machine: SnapLab break-test bench
DAQ device: LabJack T7
Beam location: No. 2 — Second position
Fixed grip: Sewn Loop
Moving grip: Sewn Loop

Instrumentation

Recorded channels
Channel	Sensor	Type	Units	Calibrated
AIN2 Main	Main Force Sensor	force	kN	Not recorded

Method

Mantra MK4 sewn loop (pattern 512) in the Sewn Loop to Sewn Loop break-test rig, line drawing — Test setup: Sewn Loop to Sewn Loop · Bartack ramp for 25 mm webbings

Configuration Sewn Loop to Sewn Loop

Sewing pattern Bartack ramp for 25 mm webbings Pattern 512

Determines strength retention in a sewn loop. The particular pattern used for sewing is indicated on each test.

Each sewn loop is done in an opposite direction in order to take out the possibility of failure by uneven loading across the width and thickness of the webbing. Each sewn loop is directly attached to the clevis pins on our test machine, with a diameter of pin diameter of 19mm.

These tests are often used as our elongation tests as well, since they experience the least change in length within the anchoring method.

Webbing starting length - 1.5 m (5 ft)
Pull Rate - ~350 mm per minute

Part of batch W25AI →