1 edition of Development of an impact resistant test method for polycarboate found in the catalog.
Development of an impact resistant test method for polycarboate
by Flight Dynamics Laboratory, Wright Aeronautical Laboratories in Dayton, Ohio
Written in English
|Statement||Kenneth I. Clayton...(et al).|
|Contributions||Clayton, Kenneth I.|
|The Physical Object|
|Number of Pages||67|
Barry A. Morris, in The Science and Technology of Flexible Packaging, Chemical Resistance. Chemical resistance can be important for some packaging applications, such as in the packaging of chemicals, cleaning agents, reagents, and alcohol towelettes. Chemicals can affect the strength, flexibility, impact resistance, appearance, dimensions, and weight of packaging films. Abstract. In accordance with a notification issued by Japan’s Ministry of Health, Labour and Welfare (MHLW) in , the Japanese Center for the Validation of Alternative Methods (JaCVAM) has accelerated applications for new test methods developed as alternatives to animal testing for the safety assessment of the manufacture and sales of cosmetic products and quasi-drug products that contain.
The Charpy impact test, also known as the Charpy V-notch test, is a standardized high strain-rate test which determines the amount of energy absorbed by a material during ed energy is a measure of the material's notch is widely used in industry, since it is easy to prepare and conduct and results can be obtained quickly and cheaply. A New Method to Quantify Crazing in Various Environments. Creep Analysis of Polymeric Pipes Under Internal Pressure. Pre-necking and post-necking relaxation and creep behavior of polycarbonate: a phenomenological study. Effect of C sorption and desorption on the creep response of polycarbonate.
Two of the most common methods are the so-called Izod and Charpy (pendulum) impact tests. 1 The Izod test is the more popular method for plastic materials whereas Charpy is very common for metals. The Izod 2 pendulum impact toughness test is described in the standard ASTM D This method requires a minimum of five and preferably ten or more. Izod Impact Strength - D ft-lb/in Molded Notch Notch Izod Impact Strength - ft-lb/in Milled Notch Notch Tensile Impact Strength D ft-lb/in2 20 Abrasion Resistance D Change in Haze 0 cycles Haze, % 0 10 cycles Haze, % 50 cycles Haze, % cycles Haze, % Rockwell Hardness D M ASTM Test Thermal Method.
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As the polycarbonate specimen undergoes large plastic deformation under impact, the down (opposite impact) side is under tensile loading and most influential in initiating failure. For that reason, polycarbonate sheet coated on one side should be tested with the coated side down.
D Test Method for Deflection Temperature of Plastics Under Flexural Load in the Edgewise Position. D Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials. D Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement.
D Terminology Relating to Plastics. Polycarbonate was chosen for the present study since it is extensively used due to its excellent combination of stiffness, strength, toughness, ductility, impact resistance and transparency.
It is well known that the stress–strain behavior of glassy polymers exhibits a Cited by: Note 1: In the development of this test method it was found that the following factors influenced the ability of a button to resist failure under impact conditions: resin formulation, shape ligne size, thickness, number and spacing of holes.
Buttons may also pass this test but fail during the pressing of a garment due to the presence of heat during pressing. D Test Methods for Impact Resistance of Rigid Poly (Vinyl Chloride) (PVC) Building Products.
D Test Method for Impact Resistance of Flat, Rigid Plastic Specimens by Means of a Falling Dart (Tup or Falling Mass) E Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method. ASTM DA - Standard Test Methods for Impact Resistance of Plastic Film by the Free-Falling Dart Method IS (R) - Specifications for.
The shatter-resistance is very important for children and for physically-active persons. If anyone here has children that need corrective lenses, protect their eyes with polycarbonate. As a nice side-benefit, polycarbonate has good UV protection without additional optical coatings.
I had a nice simple test machine in my optical lab. Unnotched impact resistance of a material may be one or two orders of magnitude higher than the notched impact resistance for the same material. Because the crack initiates at a flaw, which is often a filler particle or agglomerate, this test method is very sensitive to the filler type, amount, level of dispersion, and adhesion between filler and polymer.
The AATCC Style Guide for Writing Test Methods (page ) is the defining document used by research committees in writing these methods.
The Rules of Procedure for AATCC Test Method and Technology Committees (page ) is the defining document for the organization and function-ing of these research committees.
About this book Written in easy-to-read and -use format, this book updates and revises its bestselling predecessor to become the most complete, comprehensive resource on plastics testing. This book has an emphasis on significance of test methods and interpretation of results.
those in Test Method D The test conditions of Geometry GE are the same as those in Test Method Dimpactor head conﬁguration H Because of the nature of impact testing, the selection of a test method and striker must be somewhat arbitrary.
Consider the end use environment and requirements when choosing from. Standard Test Methods for Impact Resistance of Rigid Poly(Vinyl Chloride) (PVC) Building Products1 This standard is issued under the ﬁxed designation D ; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision.
Polycarbonate (PC) material has a variety of applications which offers high resistance to impact loadings. Perforation performance of a projectile striking a PC target is the main character that determines the resistance capability of PC mate-rial. There are three methods to. I did a simple impact test for a DIY window repair, I did prove that acrylic can handle a good impact of a 6 lb steel block up to a 4ft drop, polycarbonate took that 6 lb drop at 21ft and dented.
AATCC M9, A Summary of ASTM Methods for Interlaboratory Testing. AATCC M10, Barré: Visual Assessment Descriptive Terms and Terminology.
AATCC M11, Glossary of AATCC Standard Terminology. AATCC M12, AATCC Style Guide for Writing Test Methods. AATCC M13, Rules of Procedure for AATCC Test Method and Technology Committees. D Test Method for Determining Dimensions of Ther-moplastic Pipe and Fittings3 F Practice for Drafting Impact Test Requirements in Thermoplastic Pipe and Fitting Standards3 3.
Signiﬁcance and Use The impact resistance of thermoplastic pipe and ﬁttings relates to suitability for service and to quality of processing. Transition Temperatures. The rigid molecular backbone of the BPA PC leads to a high melting temperature (– °C), and a high glass transition temperature ( °C) relative to a polymer such as polystyrene which has a T g of °C.
That this molecular rigidity and not the polar interchain attraction of the ester group or of the benzene rings is the predominating influence may. Impact Testing of Aluminum and Titanium 6Al-4V for Material Model Development J.
Michael Pereira, Duane M. Revilock, Bradley A. Lerch and Charles R. Ruggeri impact test data and failure analysis for a variety of aircraft materials that can be used to the test methods and procedures are extensively documented and all of the raw data.
What's more, a movement has emerged to abandon Izod impact reporting (as per the ASTM D test protocol) in favor of the Charpy test (ISO ), another pendulum impact method that is dominant in Europe. This shift is being driven mainly by the automotive industry as part of its global standardization efforts.
Development of engineering plastics to replace steel in car audio chassis requires the following considerations: (1) high thermal resistance to the heat generated from the engine, (2) superior mechanical properties against external vibrations and impacts, (3) good EMI shielding characteristics, (4) light weight and (5) low cost.
In this paper we analyze, using the Finite Element Method, the process of brittle-ductile transition in the failure mode observed in polycarbonate notched specimens under impact loads.as “a lens of 2mm minimum thickness that has been heat treated to withstand a specific impact test.” The impact test was a 1/2 inch steel ball dropped 50 inches for notched or drilled lenses and a 5/8 inch ball for other lenses.
So, a 5/8 inch dropped-ball test was establishedpractice, and the FDA wished to set a floor under the impact.Test Method C is similar to Test Method A, except for the addition of a procedure for determining the energy ex-pended in tossing a portion of the specimen.
The value reported is called the “estimated net Izod impact resistance.” Test Method C is preferred over Test Method A for materials that.