ASTMD

Python code to do the computations for ASTM D series standards
import ASTMD

See example.py which computes the results files from Sample_Data.txt

includes the following standards :

ASTM D790 : Standard Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Material

Material = ASTMD.D790(filenames, widths, depths, span, mtr_name="", largespan=False, validate_modulus=False)

filenames : List of paths to the test data files
widths : List of the samples widths
depths : List of the samples depths (thickness)
span : Span used to test the material
mtr_name : String for the material name (optional)
largespan : True if the test were done using the largespan procedure
validate_modulus : if True Adds a plot of all the modulus lines to visualise the data\

Computes the flexural stress and strain with equations in ASTM D790
Finds average flexural stress for all samples
Finds average tangent modulus
Plots the stress-strain curve
Plots the modulus line
Returns a result_D790.txt file in the same directory as the test data

ASTM D3039 : Standard Test Method for Tensile Properties of Polymer Matrix Composite Materials

Material = ASTMD.D3039(filenames, widths, thicknesses, lengths, mtr_name="", extensiometer_length=50.8, validate_modulus=False)

filenames : List of paths to the test data files
widths : List of the samples widths
thicknesses : List of the samples thicknesses
lenths : List of the samples lengths
mtr_name : String for the material name (optional)
extensiometer_length : Length of the extensiometer used to measure deformation
validate_modulus : if True Adds a plot of all the modulus lines to visualise the data\

Computes the tensile stress and strain with equations in ASTM D3039
Finds average tensile strenght
Finds average chord modulus from data points at strain = 0.001 and strain = 0.002 as per ASTM D3039 standard
Plots the stress-strain curve
Plots the modulus line
Returns a result_D3039.txt file in the same directory as the test data

ASTM D5868 : Test Method for Lap Shear Adhesion for Fiber Reinforced Plastic (FRP) Bonding

Material = ASTMD.D5868(filenames, areas, mtr_name="")

filenames : List of paths to the test data files
areas : List of the samples areas
mtr_name : String for the material name (optional)\

Computes the shear stress at the bonded joint
Finds the average shear strength
Plots the stress-time curve (just to show the data)
Returns a result_D5868.txt file in the same directory as the test data

Dependencies

numpy/ pandas/ mathplotlib.pyplot

ilyasst / ASTMD