These rugged assemblies allow a full range of compression tests to be carried out on samples having greater than 400mm width
Lloyd Instruments offers a range of compression cages for its universal testing machines, designed for very large sample testing.
These rugged assemblies allow a full range of compression tests to be carried out on samples having greater than 400mm width.
Applications include testing of components as diverse as complete car seats, mattresses, large cardboard boxes and large diameter pipes.
The frames are constructed from aluminium and built to individual customer specifications, with dimensions of 1.6x1x1.3m being one of the largest sized frames supplied to date.
The sides of the cages can be open or shielded with wire mesh or polycarbonate panels.
Compression platens can be integrated into the frame and mounted on guide bearings to ensure alignment.
Since the addition of a compression cage can significantly raise the height of the instrument itself, the machine's control console and emergency stop switch are mounted on the cage for easy access.
Although generally dedicated to large sample testing applications, the instruments can be returned to a normal configuration by removing the through rod, platen and lower bearing and replacing the anchor pin.
Cages can be supplied to fit below any of the company's LFPlus (1kN), LRX (2.5kN) and LRXPlus (5kN) series of single column instruments and the LR5KPlus (5kN), LR10KPlus (10kN), LR30KPlus (30kN), LR50KPlus (50kN), EZ20 (20kN) and EZ50 (50kN) series of twin column machines.
General compression testing allows a number of different properties to be determined for a wide range of materials and products.
These properties include compressive yield stress, compressive strength, offset yield stress, percentage compressive strain at compressive yield stress, percentage compressive strain at rupture and compressive stress at specified compressive strain.
