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ASTM D6264 · Center indentation

Uses a hemispherical indenter to assess a polymer-composite plate under a concentrated quasi-static force. CDS supplies a separate elastic center-indentation estimate.

Analytical / measured-data assessment

Official ASTM D6264/D6264M-23 ↗

Open this exercise in Workbench ↗

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.

01

Specimen & fixture

Actual Workbench D6264 center indentation setup
Recorded Workbench setup or assessment view · Full-size capture ↗
02

Calculated assessment

Elastic center indentation

Force (N)

Recorded instructional case. Crosshead displacement (mm) versus Force (N). Exact saved values are available in the table below.2500187.50.044491250.0889862.50.133500.178

Crosshead displacement (mm)

View plotted values
Elastic center indentation — recorded values
SeriesCrosshead displacement (mm)Force (N)
Elastic center indentation00
Elastic center indentation0.0048930332429022912.5
Elastic center indentation0.008148666475437955
Elastic center indentation0.011028409961181947.5
Elastic center indentation0.01369812245192716410
Elastic center indentation0.01622662514894090312.5
Elastic center indentation0.0186508906489352315
Elastic center indentation0.02099367862478179717.5
Elastic center indentation0.02327025542353632420
Elastic center indentation0.02549148915513609822.5
Elastic center indentation0.02766546362301984525
Elastic center indentation0.02979839776914892227.5
Elastic center indentation0.0318952055863005330
Elastic center indentation0.033959855357086132.5
Elastic center indentation0.035995610042037335
Elastic center indentation0.0380051938098676137.5
Elastic center indentation0.0399909108056061240
Elastic center indentation0.0419547319781312942.5
Elastic center indentation0.0438983599261543345
Elastic center indentation0.0458232782364566747.5
Elastic center indentation0.04773078964176448450
Elastic center indentation0.04962204596251898552.5
Elastic center indentation0.0514980719074481655
Elastic center indentation0.05335978421356095457.5
Elastic center indentation0.0552080072005092560
Elastic center indentation0.0570434855319811162.5
Elastic center indentation0.0588668947769396565
Elastic center indentation0.0606788502197928467.5
Elastic center indentation0.0624799142637198670
Elastic center indentation0.0642706026938667872.5
Elastic center indentation0.0660513900091313875
Elastic center indentation0.0678227139873818977.5
Elastic center indentation0.069584979615417380
Elastic center indentation0.071338562489095282.5
Elastic center indentation0.0730838117689006885
Elastic center indentation0.0748210527604079687.5
Elastic center indentation0.0765505891765667290
Elastic center indentation0.0782727051287676692.5
Elastic center indentation0.0799876668856329795
Elastic center indentation0.0816957244320112997.5
Elastic center indentation0.08339711285539941100
Elastic center indentation0.08509205358271904102.5
Elastic center indentation0.0867807554868461105
Elastic center indentation0.0884634158793758107.5
Elastic center indentation0.0901402214036858110
Elastic center indentation0.0918113488403433112.5
Elastic center indentation0.09347696583521088115
Elastic center indentation0.09513723155918546117.5
Elastic center indentation0.09679229730730389120
Elastic center indentation0.09844230704393185122.5
Elastic center indentation0.10008739789988663125
Elastic center indentation0.10172770062660602127.5
Elastic center indentation0.10336334001184184130
Elastic center indentation0.10499443526081328132.5
Elastic center indentation0.106621100346286135
Elastic center indentation0.10824344433063737137.5
Elastic center indentation0.10986157166261733140
Elastic center indentation0.11147558245120798142.5
Elastic center indentation0.1130855727187193145
Elastic center indentation0.11469163463502541147.5
Elastic center indentation0.11629385673464145150
Elastic center indentation0.11789232411816315152.5
Elastic center indentation0.11948711863943229155
Elastic center indentation0.12107831907965325157.5
Elastic center indentation0.1226660013095626160
Elastic center indentation0.12425023844064496162.5
Elastic center indentation0.12583110096629177165
Elastic center indentation0.12740865689371372167.5
Elastic center indentation0.1289829718673412170
Elastic center indentation0.13055410928437935172.5
Elastic center indentation0.13212213040312162175
Elastic center indentation0.13368709444457377177.5
Elastic center indentation0.13524905868788883180
Elastic center indentation0.1368080785600705182.5
Elastic center indentation0.13836420772036329185
Elastic center indentation0.13991749813971144187.5
Elastic center indentation0.14146800017563604190
Elastic center indentation0.14301576264285196192.5
Elastic center indentation0.14456083287991867195
Elastic center indentation0.14610325681219555197.5
Elastic center indentation0.14764307901135099200
Elastic center indentation0.14918034275165415202.5
Elastic center indentation0.1507150900632614205
Elastic center indentation0.15224736178269183207.5
Elastic center indentation0.15377719760067288210
Elastic center indentation0.155304636107522212.5
Elastic center indentation0.15682971483621921215
Elastic center indentation0.1583524703033134217.5
Elastic center indentation0.15987293804779448220
Elastic center indentation0.16139115266805537222.5
Elastic center indentation0.162907147857057225
Elastic center indentation0.16442095643580334227.5
Elastic center indentation0.1659326103852254230
Elastic center indentation0.1674421408765655232.5
Elastic center indentation0.16894957830034885235
Elastic center indentation0.17045495229402113237.5
Elastic center indentation0.17195829176832805240
Elastic center indentation0.17345962493250594242.5
Elastic center indentation0.17495897931834856245
Elastic center indentation0.17645638180321202247.5
Elastic center indentation0.17795185863201393250
03

Set up in CDS

  1. Connect the laminate, plate, testing machine and center-indentation support.
  2. Set the installed support spans, edge restraint and force.
  3. Enter a measured or explicitly hypothetical Hertz contact coefficient.
  4. Inspect center displacement, local indentation and total approach; review the model limits.
Explicit plate-support dimensionsSeparated plate bending and local indentationIndependent contact calibration
Inputs for this recorded case
  • 30 plies / 3.75 mm
  • Specimen length: 150 mm
  • Specimen width: 100 mm
  • Support span X: 125 mm
  • Support span Y: 75 mm
  • Laminate density: 1600 kg/m³
  • Plate boundary: 0 —
  • Hertz contact coefficient: 10000 N/mm^1.5
  • Applied indentation force: 250 N

These are teaching-case inputs, not ASTM-prescribed specimen dimensions or acceptance criteria.

04

Readout & interpretation

Applied indentation force
250 N
Plate center displacement
0.09245 mm
Local elastic indentation
0.0855 mm
Total crosshead displacement
0.178 mm
Elastic stored energy
0.02011 J
Plate modal stiffness
2,704 N/mm

Elastic center plate displacement plus local Hertz indentation. Fixture compliance, permanent dent depth and indentation damage are excluded.

About this ASTM reference

Standard Test Method for Measuring the Damage Resistance of a Fiber-Reinforced Polymer-Matrix Composite to a Concentrated Quasi-Static Indentation Force

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 ↗

Elastic center plate displacement plus local Hertz indentation. Fixture compliance, permanent dent depth and indentation damage 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.

Model basis · equation and interpretation

Approach = F/k + (F/KH)^(2/3).

The first term is modal plate center displacement and the second is elastic local Hertz indentation. The linked thin symmetric orthotropic plate supplies k; the case supplies force and calibrated contact coefficient KH. This branch does not predict indentation damage, permanent dent depth, membrane stiffening or sandwich-core crushing.

Instructional model comparison, not experimental validation or ASTM certification. Physical testing requires the licensed standard and a qualified test program.

Impact, indentation and residual strength

D7136 uses a drop-weight impact. D6264 uses quasi-static center indentation. D7137 assesses compression of a damaged plate from independent measured test data.

D7766/D7766M-23 ↗ supplies sandwich-specific modifications to the impact and indentation methods. The present thin-plate model does not resolve core crushing or qualify that physical test.

The referenced methods have polymer-composite material scopes. New metal and ceramic database classes do not imply qualification under those methods.