Micro CT X ray tomography

Material Sample Stages for SkyScan 1172 & 1174

COOLING - TENSION - COMPRESSION - MICRO POSITIONING

An innovative design for performing microtomography with samples under special environmental conditions

The newly designed sample stages from SkyScan allow for a unique way to conduct microtomography with materials subject to special conditions. Scans can now be performed with samples under tension, compression, or in a cooled environment. The stages are compatible with the SkyScan 1172 High Resolution Micro-CT and the SkyScan 1174 Compact Micro-CT.

Related products

1172 High Resolution Desktop X ray Microtomograph

Skyscan 1174 Compact Micro-CT

Cooling Stage

-45°C delta from ambient temp.

0.5°C accuracy

15mm diameter by 15mm high sample size

Supplied with temperature control program

Microprocessor controlled two-stage solid state Peltier cooling with greater than 45°C difference from object stage to ambient temperature

Temperature stabilization with 0.5°C accuracy

Object covered by plastic transparent cylinder with 0.9mm wall thickness

Maximum object size is 15mm in diameter, 15mm in length

Supplied with control program for adjusting cooling temperature and measuring current specimen temperature

Maximum object magnification: <2.3um pixel size @ 4K for 10Mp 1172 system, <4.5um pixel size for 1.3Mp; Full magnification range for 1174

Mechanical Stage

The SkyScan Material Testing Stage allows the user to combine micro-CT imaging with tensile and compression testing. During scanning the sample is subjected to a controlled load, while having the loading curve displayed on-screen in real time.

This material testing stage is specially designed for compression and tension testing using an accurate load cell and displacement sensor. The stage can be used in 2 modes: a continuous mode for compression or tension up to the maximum allowable load or until the maximum displacement; and a predefined mode in which the user can specify either the load or the displacement that should be reached. For compression the lower part of the stage will be moved upwards, for tension downwards. The loading curve is displayed on-screen in real time; units can be changed; load/displacement or stress/strain curves can be displayed and saved. The object can be held under a specific loading for micro-CT scanning.

The stage can be (retro) fitted with a load cell having a different range.

The accuracy of the measurement and resolution will be around 0.5% of the load cell’s full scale. This is an important figure to bear in mind when choosing a load cell. The load cell’s range should be higher than the load the specimen will be exposed to. An “oversized” load cell will have a negative effect on the system’s sensitivity.

Load ranges	9.8N up to 444N
Displacement sensor accuracy	± 0.01mm
Load measurement accuracy	± 1% of the full range
Maximum object diameter	20mm
Maximum travel	5.5mm
Max object height for compression	23mm
Max object length for tensile tests	18mm

Tension

Compression

Micro Positioning Stage

The micro-positioning stage helps to achieve exact positioning of small objects in the middle of the scanning field. Precise object centering improves all aspects of scan quality, enabling maximum magnification to be achieved and optimizing scan speed. This positioning stage has 5mm travel in the X and Y directions, and axial positioning is attained in a straightforward, user-friendly procedure by reference to projection images.

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Micro Photonics Inc.
PO Box 3129
Allentown, PA 18106-0129

Tel: (610) 366-7103 Fax: (610) 366-7105 E-mail: info@microphotonics.com