µTS — Universal Test System for Use Under the Microscope

Miniature load frames spanning multiple scales of length, speed, and force

The Psylotech µTS is a compact load frame built to operate directly under an optical microscope. The flagship version handles up to 1.6 kN while keeping the footprint and true physical size to a minimum.

Scale of speed

Direct-drive ball-screw actuators give the system an unusually wide speed range, spanning roughly seven orders of magnitude. That range comes in handy for fatigue testing, step-loaded creep work, stress-relaxation studies, and general fine-tuned load control.
 

Scale of force

Psylotech designs and builds its own high-resolution force transducers in-house, which lets the system handle a wider range of specimen sizes without needing to be re-aligned each time. Because each transducer is wire-EDM'd from a single block of metal, it offers strong bending stiffness together with very accurate alignment.
 

Range of grips

A wide selection of gripping hardware is available: shoulder-mount and clamp-style tension grips, compression platens, 3- and 4-point bend fixtures, and Arcan grips, plus a flat platform grip with an M3 bolt pattern. The notched T-slot lets grips be repositioned repeatably across all six degrees of freedom.
 

Centering stage

An optional X-stage keeps the region of interest centered under the microscope for the full duration of a test. Cross-head motion is software-programmable, so even a specimen undergoing bending can be kept within the field of view throughout.
 

Available options

On request, the system can be configured with torque measurement, temperature control (from -65°C up to 1,600°C), and a 4-axis high-resolution load cell. Actuators can also be tuned specifically for fatigue testing, and the LabVIEW control source code is available on request.

Technical Features

100 Series

Property

Unit

100N

1.6kN

4.5kN

Force capacity

N

100

1600

4500

Force resolution *

uN/mN

50µN

800µN

2.5mN

Stroke**

mm

40

40

26

Max. speed***

mm/s

145

145

36

Length****

mm

220

300

180

Axial encoder resolution

bit

23

23

23

Bearing runout

µm

2.5

2.5

2.5

Nominal mass

kg

1.3-2.5

1.3-2.5

1.3-2.5

200 Series

Property

Unit

10kN

25kN

Force capacity

N

10000

25000

Force resolution*

mN

5mN

12.5mN

Stroke**

mm

70

70

Max. speed***

mm/s

175

70

Length****

mm

736

736

Axial encoder resolution

bit

23

23

Bearing runout

µm

4

4

Nominal mass

kg

20-25

20-25

* 100 Series can accomodate 100 & 10N HiRes load cells
**minimum value, longer strokes available
***higher speeds available
****stock value, system length easily modified