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data_summary.txt
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data_summary.txt
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**********************************************************************************************
----------------------------------------------------------------------------------------------
DATA SOURCE MODALITIES (top level folders):
----------------------------------------------------------------------------------------------
DMA_data: data from dynamic mechanical analysis from small-amplitude oscillatory
strain experiments and time-temperature superposition (TTS)
intermediate_rate_data: data from a series of load-frame experiments at effective
strains rates from 0.001 1/s to 10.0 1/s with high-speed imaging-base
digital image correlation
microCT_data: Micro-x-ray computed tomograph volume images (greyscale and binarized)
at assorted magnifications and/or with in-situ compression
quasistatic_rate_data: data from quasistatic (no rate-dependent effects active) load-frame
experiments with high-resolution digital image correlation
----------------------------------------------------------------------------------------------
----------------------------------------------------------------------------------------------
MATERIALS TESTED (subfolders with a given test modality):
----------------------------------------------------------------------------------------------
VN01: vinyl-nitrile close-cell foam from Dertex Corp "Impax VN600". Probably a
nitrilebutadiene/polyvinyl-chloride blend, manufacture quoted specifications are
as follows:
____________________________________________________________________________
| DESCRIPTION TEST METHOD VN600 UNITS |
-----------------------------------------------------------------------------|
| HARDNESS (DUROMETER) ASTM D2240 (55 - 75) SHORE 00 |
| (TEMP. 21±0.5 °C) |
| DENSITY ASTM D297 (0.09 - 0.12) g/cm³ |
| TENSILE STRENGTH ASTM D412 13 kg/cm² |
| TEAR STRENGTH ASTM D624 6.5 kg/cm |
| ELONGATION ASTM D412 150 (min.) % elongation |
| LINEAR SHRINKAGE 70 °C x 24 HR (10mm) 2.5 % shrinkage |
| COMPRESSION DEFLECTION ASTM D1056 58.6 (min.) 25 % MPa |
| (TEMP. 21± 0.5°c) 8.4 (min.) 25 % PSI |
| RESILENCE DIN 53512 13 % rebound |
|____________________________________________________________________________|
----------------------------------------------------------------------------------------------
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SUPPORTING ANALYSIS METHODS (subfolders with a given test modality, see readme files):
----------------------------------------------------------------------------------------------
DMA analysis: input datasheet (.xls)
Python conversion sheet to convert input data format to TTS format
Example template for TTS (.xls)
Intermediate rate analysis: Matlab-base digital image correlation package set up to run on
servo-hydraulic data and high-speed camera data
Micro CT analysis: Python library to read in, process, and write out volume images
from .tif stacks. This includes tools to pre-process (denoising
filters, cropping, etc.) binarize and compute relative density
and to write out volumes as .stl files.
Intermediate rate analysis: Matlab-base digital image correlation package set up to run on
electromechanical data and high-resolution camera data
**********************************************************************************************
----------------------------------------------------------------------------------------------
----------------------------------------------------------------------------------------------
DISCLAIMER
----------------------------------------------------------------------------------------------
Certain commercial equipment, instruments, or materials are identified in this dataset in order to
specify the experimental procedure adequately. Such identification is not intended to imply
recommendation or endorsement by NIST, nor is it intended to imply that the materials or equipment
identified are necessarily the best available for the purpose.
This readme.txt file was prepared by Alexander Landauer on Aug 9, 2022.