ASTM D1709 test is performed for evaluation of Impact Resistance of Plastic Film by the Free-Falling Dart Method. Test results obtained are used both for quality control evaluation or for end-use comparisons in a commercial application environment.
Scope:
The Free Falling dart method ASTM D1709 is the conventional method for assessing the stiffness or strength of plastic sheets. A single dart model and a single drop-test height are used while the weight of the dart is varied during the test.
Test Procedure:
For the ASTM D1709 test, there are two methods and the choice of method A or method B depends upon a sample’s impact strength. In method A, dart size and the drop-test height are determined as per the method chosen. A number of samples are then impacted to fix an appropriate starting point for the weight of the dart. The test sample is mounted securely in an aerial ring at the pedestal of the drop tower. The mounting bracket is fine-tuned to a certain drop height before inserting the dart into the bracket. As the dart is released, it impacts the center of the test sample. The drop weight is measured precisely. Finally, the test record (pass/fail) is registered.
Bruceton Staircase is a method that gives the most precise way of analyzing this data. As many as 20 specimens are used to bracket the pass/fail energy grade. Gradually the distance is increased, and as the weight drops, the failure point is determined. Specimens, up to 20, are generally used for known estimated mean-failure height. In case a test sample has passed, drop height will be moved ahead by one unit. In case a sample fails, drop height goes back one unit. Mean failure height that is the point at which 50 percent of the test samples undergoing impact fail, is then calculated using the results obtained from 20 impacts.
Test method A details a dart with a 38 mm (1.5 inches) diameter. The drop height is from 0.66 m (26 inches). Test method B details a dart with a 51 mm (2.0 inches) diameter. The Drop height is from 1.5 m (60 inches).
Specimen size:
Plastic sheet samples of dimension 230 mm × 230 mm (9 inches × 9 inches) are cut out for use. Thirty samples minimum are required for the test method.
Data:
Impact failure weight (g)
Conclusion:
ASTM D1709 is a standard test method for measuring impact resistance of plastic film by the free falling dart.
Metrology
A variety of microscopy and spectroscopy tools available for precise measurements from the nano to the meter scale.
Metrology Testing Services POPULAR TESTS:
Materials Testing
ASTM and ISO standard and custom chemical, mechanical, thermal, corrosion tests, etc. for all materials metals, ceramic or polymers.
Materials Testing Services POPULAR TESTS:Nondestructive Testing Electrical Testing Chemistry Analysis
Product Testing
Thousands of tests for product quality and reliability under heat, humidity, temperature shock, vibration, drop, electrostatic discharge.
Product Testing Services POPULAR TESTS:ASTM E572 test method covers the analysis of stainless and alloy steels by Wavelength Dispersive X-ray Fluorescence Spectrometry (WDXRF). It provides rapid, multi-element determinations with sufficient accuracy to assure product quality.
The ASTM D2674 is a standard test method for the analysis of sulfochromate etches solution used in the surface preparation of aluminum. The ASTM D2674 standard specifies a method for determining the efficacy of an etchant used to prepare the surface of aluminum alloys for subsequent adhesive bonding.
An immunological method for quantization of Hevea Natural Rubber (HNRL) proteins using rabbit anti-HNRL serum. Rabbits immunized with HNRL proteins react to the majority of the proteins present, and their sera have the capability to detect most if not all the proteins in HNRL.
You share material and testing requirements with us
We ensure your sample pick-up in an ensured manner
We deliver test report to your inbox
Just share your testing requirements and leave the rest on us!
