Test & measurement However, when the time came to weigh
the bigger Gokstad ship, there were some additional challenges, and this is where HBK was able to help. As weighing points along the keel support beam were being utilised in the moving rig, instead of fastening the brackets that transfer force to the load cells with screws and two approximately placed 12mm rods, engineers needed to use three 24mm hardened steel rods at the lifting point. As these had to be placed with high precision, large holes had to be carefully drilled, whilst causing minimum vibration to the ship. For this project, Z6 load cells from
HBK were installed on various measuring points and connected to a QuantumX MX1615B Strain Gauge Amplifier with catman AP software. The MX1615B is part of the QuantumX
family that offers compact strain gauge amplifiers that deliver accurate results for both dynamic and static measurements. Suitable for precise and safe data acquisition of strain gauges in full-bridge, half-bridge, and quarter-bridge configuration, as well as strain gauge-based transducers, potentiometers, resistance thermometers (PT100) or normalised voltage (+/-10V), the MX1615B is the ideal choice whenever strains, forces and displacements are acquired. Equipped
with 16 sensor inputs and arranged in compact housing, typical application areas include static stress tests for FEM models, quasi-dynamic fatigue tests for life analysis, monitoring tasks, material investigations, residual stress analysis, maintenance tasks, as well as for general recording of the load data in the field. Used with catman AP software, simple data analysis can be achieved. Following previous experience with
another system whereby hardware had performed considerably better than software, the QuantumX with catman AP software
provided the museum with a complete system which is enabling it to continue to achieve accurate and reliable results.
ConClusion
To cope with the demand required of this large scale and complex project, the versatility of the QuantumX, combined with the ease of use of the catman AP software has proved itself to be a valuable resource by enabling the museum to prepare for the next stage of its exciting new journey.
HBK
www.hbkworld.com
Getting
Viking ships on the move
Instrumentation Monthly August 2021 49 Main image credit: ParrySuwanitch /
Shutterstock.com
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