VIRTUAL TESTING / CDS WORKBENCH
ASTM C393 · Sandwich core flexure
Uses sandwich-beam bending to assess core or core-to-facing shear strength and collect load-deflection behavior.
CDS sign-in and suitable licensed access may be required.
Recorded instructional case · Workbench captures and saved calculation data, October 2026. This website preview does not run the test.
Specimen & fixture
Calculated assessment
Core shear stress (MPa)
Total machine force (N)
View plotted values
| Series | Total machine force (N) | Core shear stress (MPa) |
|---|---|---|
| Nominal core shear screening | 0 | 0 |
| Nominal core shear screening | 500 | 0.23809523809523808 |
Set up in CDS
- Link the equal facesheets and actual core dimensions.
- Set three-point support span and total machine force.
- Enter measured core and facesheet strengths.
- Review nominal core shear and facesheet stress.
Inputs for this recorded case
- 350 × 50 × 22 mm
- 17 plies / 22 mm
- Selected force 500 N
- Explicit source calibration/properties
These are teaching-case inputs, not ASTM-prescribed specimen dimensions or acceptance criteria.
Response & readout
Mean face stress magnitude (MPa)
Total machine force (N)
View plotted values
| Series | Total machine force (N) | Mean face stress magnitude (MPa) |
|---|---|---|
| Nominal facesheet screening | 0 | 0 |
| Nominal facesheet screening | 500 | 35.714285714285715 |
- Maximum bending moment
- 37,500 N·mm
- Nominal core shear stress
- 0.2381 MPa
- Mean facesheet stress magnitude
- 35.71 MPa
All recorded readouts
- Maximum bending moment
- 37,500 N·mm
- Nominal core shear stress
- 0.2381 MPa
- Mean facesheet stress magnitude
- 35.71 MPa
- Core shear demand / measured strength
- 0.2381 —
- Facesheet tension demand / measured strength
- 0.07143 —
- Facesheet compression demand / measured strength
- 0.119 —
- Linked total sandwich thickness
- 22 mm
Nominal stress screening. Deflection history, indentation and wrinkling are excluded.
About this ASTM reference
Standard Test Method for Core Shear Properties of Sandwich Constructions by Beam Flexure
Active catalog edition checked October 10, 2026. The official standard defines the physical method; the CDS example below has a narrower modeling scope. Full procedures remain on ASTM’s site.
Find this setup in Workbench
Opens the connected guided study. Select the matching ASTM setup in the Test menu to inspect its fixture.
What this CDS case represents
Read the actual ASTM standard ↗Nominal stress screening. Deflection history, indentation and wrinkling are excluded.
This analytical or measured-data model provides its own curves and metrics. Synchronized failure playback is not supported; a mounted fixture view does not imply that contact, crack growth or impact history is solved.
Instructional model comparison, not experimental validation or ASTM certification. Physical testing requires the licensed standard and a qualified test program.