Head Expanders and Thermal Barriers

LDS’ standard range of high-quality head expanders increases the capability of existing shaker systems by allowing users to increase the effective mounting surface compared to that of the armature, and thus accommodate larger payloads.

The head expanders have been designed using advanced finite element analysis modelling techniques and are cast from a high-strength magnesium alloy with excellent damping properties.

Each head expander is supplied complete with fasteners and fitting tools for immediate testing capability. Four accelerometer mounting positions are conveniently situated below the payload mounting surface at appropriate control points.

To enable use with environmental chambers, thermal barriers are available for each size in the range. Other insert patterns can be supplied to special order.

Uses

• Increase the effective mounting surface of the shaker armature
• Accommodate larger payloads
• Increase the quantity of test items at one time to speed up test time
• Provide increased flexibility in fixture design

Features

• High-quality aerospace grade magnesium alloy structure with excellent damping properties
• Usable frequency range up to 2 kHz
• Standard insert pattern in M8, M10 or 3/8 UNC insert sizes
• Accurate, in-house tested dynamic performance (first mode data supplied)
• Multiple accelerometer control positions (10 – 32 thread)
• Includes full mounting kit with tools
• Corrosion resistant: Non-machined parts are painted; machined parts are coated with lubricant
• Standard off-the-shelf design for short lead time