Standardized Test Methods for Use in Waste Compliance Testing in the Department of Energy'S Waste Acceptance Process

1986 ◽  
Vol 84 ◽  
Author(s):  
George B. Mellinger
Keyword(s):  
Standardized Tests ◽  
Standardized Test ◽  
Test Methods ◽  
Test Method ◽  
Approval Process ◽  
Test Procedures ◽  
Compliance Testing ◽  
American Society

Summary:Standardized test methods that are currently in use or under development appear to adequately cover most of the testing that may be required to demonstrate compliance with the WAPS. It may be important to complete standardization of those tests that are under development, and to develop additional standardized tests for those specifications for which no standardized tests exist. A significant amount of work would be involved in this effort. Therefore, before this effort is undertaken, DOE must decide whether there is a need for a set of standardized test methods that would receive an “official approval” for use in waste compliance testing. If a set of approved tests is needed, DOE would need to determine what types of tests to include in the “approved list”, who should develop these tests, and which organizations should review and approve the test methods. Test method review and approval might be accomplished through the use of the Materials Review Board (MRB), an organization that was created by DOE for the purpose of reviewing and approving key test methods and data related to the repository licensing process. Alternatively, other means of standardizing these tests might be considered, such as processing the tests through the American Society for Testing and Materials for publication as ASTM standards.If a set of approved tests is adopted, producers would not be required to use these tests; however, if a producer wished to propose other tests for compliance testing, it would be reasonable to require that such test procedures undergo a review/approval process similar to that which the officially approved tests had undergone. Once approved, these alternate procedures could be used for compliance testing.

scholarly journals Comparing Test Methods for the Intra-ply Shear Properties of Uncured Prepreg Tapes

2020 ◽  
Vol 27 (1) ◽  
pp. 89-96
Author(s):  
Klaus Heller ◽  
Moritz Hallmannseder ◽  
David Colin ◽  
Kalle Kind ◽  
Klaus Drechsler
Keyword(s):  
Material Properties ◽  
Deformation Behavior ◽  
Standardized Test ◽  
Test Methods ◽  
Test Method ◽  
Test Procedures ◽  
Automated Fiber Placement ◽  
Bar Test ◽  
Torsion Bar ◽  
Rheometer Test

AbstractTo achieve cost-efficient manufacturing and a high part quality in Thermoset Automated Fiber Placement (TS-AFP), knowledge about the interaction between material and process parameters is of special interest. Material properties of prepregs are well known at the cured state of the resin. However, there are no standardized test procedures for the mechanical behavior of the uncured prepreg tapes. To investigate the intra-ply shear deformation behavior of uncured unidirectional prepreg tapes, we compared several measurement procedures and conducted experiments for rheometer based tests using 8552/AS4 material. We identified a rotational parallel platens rheometer test method and a torsion bar rheometer test method to be suitable. Experiments using both methods revealed that the Torsion Bar Test has a higher repeatability and the analysis is less complex. Furthermore, first results show that changes in material properties caused by aging can be analyzed using this method. In the future,we will use the Torsion Bar Test to characterize changes in deformation behavior due to material aging as well as material modifications. By this, we will be able to provide data for the material modeling thus enabling the prediction of lay-up defects such as buckling due to steering.

Reliability of Miniature Concrete Prism Test in Assessing Alkali-Silica Reactivity of Moderately Reactive Aggregates

2020 ◽  
Vol 2674 (4) ◽  
pp. 23-29
Author(s):  
Harish Konduru ◽  
Prasad Rangaraju ◽  
Omar Amer
Keyword(s):  
False Positive ◽  
Standardized Test ◽  
False Negative ◽  
Test Method ◽  
Test Procedures ◽  
Concrete Prism ◽  
Coarse Aggregates ◽  
Fine Aggregates ◽  
Mortar Bar ◽  
Concrete Prism Test

Alkali-silica reaction (ASR) is one of the most significant durability issues in concrete structures. Although there are a number of standardized test procedures to evaluate the aggregate reactivity, each method has its own drawbacks. Two of the most common tests that are employed widely are the accelerated mortar bar test (AMBT) (ASTM C1260) and the concrete prism test (CPT) (ASTM C1293). The major issue with the AMBT test is the number of false-positive results from this test associated with high test temperature, rendering the test method unreliable. CPT is one of the most reliable tests for assessing the potential for ASR, but its major disadvantage is the duration of the test involved, which takes one to two years. In this research, a novel test method called the miniature concrete prism test (MCPT) was developed and the effectiveness and reliability of the results assessed when compared with CPT and AMBT. Samples of 26 coarse aggregates and 16 fine aggregates with various reactivity levels were employed for the testing. The test results were compared for MCPT versus CPT, in which 23 out of 26 coarse aggregates and eight out of 16 fine aggregates either passed or failed in both MCPT and CPT. For MCPT versus AMBT, 16 out of 26 coarse aggregates and 13 out of 16 fine aggregates either passed or failed in both MCPT and AMBT. The sensitivity of false-negative and false-positive aggregate sources is discussed and explained briefly.

Methods to Evaluate Cleaners and Sanitizers

1982 ◽  
Vol 45 (13) ◽  
pp. 1257-1260 ◽  
Author(s):  
DALE L. SCHEUSNER
Keyword(s):  
Test Methods ◽  
Test Method ◽  
Test Results ◽  
Standard Laboratory ◽  
Test Procedures ◽  
Laboratory Methods ◽  
Product Use ◽  
Cellulose Sponge ◽  
Equivalent Test ◽  
Recovery Methods

Methods to evaluate germicides can be grouped into three categories: standard laboratory tests, in-use tests and simulated-use tests. Standard laboratory methods, such as the Available Chlorine Germicidal Equivalent test, are specifically defined for reproducibility in any laboratory by any operator, but the test results often lack relevance to actual product-use conditions. In-use test methods are relevant to product-use; however, in-use test procedures do not permit proper controls to be included in the organism recovery methods. Contact plates give an estimate of organism numbers which is only 25% of the theoretical number of organisms present. Organism recovery using a swab, cellulose sponge or tube sampler give estimates of organisms ranging from 91 to 111% of theoretical. The tube sampler is a 1-in. length of flexible tubing having a 1-in. interior diameter and a smooth end, which can make a water-tight seal on a flat surface. Simulated use testing yields data which are relevant to actual product-use. A cafeteria tray is soiled, inoculated and cleaned in a manner to simulate actual product-use. This test method permits the necessary controls to be used. Tray-test reproducibility is as good as that of the other recovery methods tested and organism recovery is quantitative. The tray test provides a means for determining biological cleaning where the effect of both cleaning and germicidal activity are measured together.

The ASTM International Standard Test Method for Determining the Superplastic Properties of Metallic Materials

2007 ◽  
Vol 551-552 ◽  
pp. 105-110
Author(s):  
Peter N. Comley
Keyword(s):  
Standardized Test ◽  
Constant Strain Rate ◽  
Standard Test ◽  
Test Method ◽  
Test Machine ◽  
Metallic Materials ◽  
Step Method ◽  
Fine Grain ◽  
American Society ◽  
Superplastic Properties

Over the last 40 years there have been many papers published showing superplastic properties of metallic materials. However there has been no standardized test available to assess and compare material, and researchers and companies in the field have devised a number of different methods to show superplastic properties. The value of these properties can vary dependent on the test method used. ASTM International (formerly The American Society for Testing and Materials ) has developed a standardized test method for superplastic properties. The standard is intended for all to use as a common platform for testing, evaluating and publishing superplastic properties to a uniform format, useful for both academia and industry. The paper outlines the main points of the standard, including:- The coupon geometry and the method of clamping the coupon in the grips. The furnace and test machine requirements. The testing conditions and the method of pulling the coupon. The analysis of the load and extension data from the test, and the standard presentation of superplastic properties. The basic superplastic properties of stress versus strain for any particular constant strain rate. The method to determine ‘m’, using a step method at a particular strain. Some data is presented showing how the properties of fine grain Ti-6Al-4V titanium alloy are derived and presented using the standard.

In vitro stent assessment by MRI: visibility of lumen and artifacts for 27 modern stents

2017 ◽  
Vol 62 (6) ◽  
pp. 565-573 ◽  
Author(s):  
Andreas Heinrich ◽  
Felix V. Güttler ◽  
Florian Schlesies ◽  
René Aschenbach ◽  
Niklas Eckardt ◽  
...  
Keyword(s):  
Standardized Test ◽  
Spin Echo ◽  
Test Method ◽  
Turbo Spin Echo ◽  
Radio Frequency Field ◽  
Nitinol Stents ◽  
Repetition Time ◽  
American Society ◽  
Stent Lumen

AbstractPurpose:The purpose of this study was to measure artifacts and visibility of lumen for modern and most commonly used stents in vascular interventions according to a standardized test method of the American Society for Testing and Materials (ASTM).Materials and methods:Twenty-four peripheral self-expanding nitinol stents and three stainless steel stents with diameters between 5 and 8 mm and lengths between 30 and 250 mm from seven different manufacturers were compared on a 1.5T and a 3T magnetic resonance (MR) scanner. The visualization of lumen and artifacts was measured according to ASTM F2119 for a turbo spin echo (TSE) [repetition time(TR)/echo time (TE) 500/26 ms] and a gradient echo (GRE) (TR/TE 100/15 ms) sequence. The stents were placed parallel and perpendicular to the radio frequency field (BResults:There were large differences in visibility of the lumen for the stent models. The visualization of the lumen varies between 0% and 93% (perpendicular to BConclusion:Reliable stent lumen visualization is possible for Misago, Supera, Tigris, and Viabahn stents, if their axis is perpendicular to B

scholarly journals Improvised Long Test Lengths via Stitching Scale Bar Method:

2020 ◽  
Vol 125 ◽  
Author(s):  
Shendong Shi ◽  
Bala Muralikrishnan ◽  
Vincent Lee ◽  
Daniel Sawyer ◽  
Octavio Icasio-Hernández
Keyword(s):  
Environmental Changes ◽  
Standardized Test ◽  
Critical Issue ◽  
Test Method ◽  
Maximum Deviation ◽  
Test Procedures ◽  
Short Scale ◽  
Reference Length ◽  
Order Of Magnitude ◽  
Point To Point

Periodic performance evaluation is a critical issue for ensuring the reliability of data from terrestrial laser scanners (TLSs). With the recent introduction of the ASTM E3125-17 standard, there now exist standardized test procedures for this purpose. Point-to-point length measurement is one test method described in that documentary standard. This test is typically performed using a long scale bar (typically 2 m or longer) with spherical targets mounted on both ends. Long scale bars can become unwieldy and vary in length due to gravity loading, fixture forces, and environmental changes. In this paper, we propose a stitching scale bar (SSB) method in which a short scale bar (approximately 1 m or smaller) can provide a spatial length reference several times its length. The clear advantages of a short scale bar are that it can be calibrated in a laboratory and has potential long-term stability. An essential requirement when stitching a short scale bar is that the systematic errors in TLSs do not change significantly over short distances. We describe this requirement in this paper from both theoretical and experimental perspectives. Based on this SSB method, we evaluate the performance of a TLS according to the ASTM E3125-17 standard by stitching a 1.15 m scale bar to form a 2.3 m reference length. For comparison, a single 2.3 m scale bar is also employed for direct measurements without stitching. Experimental results show a maximum deviation of 0.072 mm in length errors between the two approaches, which is an order of magnitude smaller than typical accuracy specifications for TLSs.

scholarly journals Literature Survey of Gaseous Hydrogen Effects on the Mechanical Properties of Carbon and Low Alloy Steels

2009 ◽  
Vol 131 (4) ◽  
Author(s):  
P. S. Lam ◽  
R. L. Sindelar ◽  
A. J. Duncan ◽  
T. M. Adams
Keyword(s):  
Mechanical Properties ◽  
Structural Integrity ◽  
Standardized Test ◽  
Uniform Elongation ◽  
Test Methods ◽  
Hydrogen Gas ◽  
Test Method ◽  
Specimen Preparation ◽  
Low Alloy Steels ◽  
Alloy Steels

A compendium of mechanical properties of carbon and low alloy steels following hydrogen exposure has been assembled from literature sources. The property sets include yield strength, ultimate tensile strength, uniform elongation, reduction in area, threshold stress intensity factor, fracture toughness, and fatigue crack growth. These properties are from literature sources under a variety of test methods and conditions. The collection of literature data is by no means complete, but the diversity of data and dependency of results on test method are sufficient to warrant a design and implementation of a standardized test program. The program would be needed to enable a defensible demonstration of structural integrity of a pressurized hydrogen system. It is essential that the environmental variables be well-defined (e.g., the applicable hydrogen gas pressure range and the test strain rate) and the specimen preparation be realistically consistent (such as the techniques to charge hydrogen and to maintain the hydrogen concentration in the specimens).

Rubber Vibration Insulators. Some Characteristic Properties and Tests

1933 ◽  
Vol 6 (2) ◽  
pp. 299-308
Author(s):  
Franz D. Abbott
Keyword(s):  
Standardized Tests ◽  
Flow Resistance ◽  
Standardized Test ◽  
Major Purpose ◽  
Cold Flow ◽  
Compression Set ◽  
Metal Rubber ◽  
American Society ◽  
Set Up ◽  
Opening Up

Abstract Insulating of vibrating parts of engineering devices and structures is one of the vital problems of this age. The original purpose of carriage and automobile tires was, as indeed the major purpose of their use today still is, the suppression and elimination of shocks and vibrations during travel. This is true in spite of the importance of the “increased mileage” obtained by the use of rubber tires—a factor of no mean importance. This purpose is not so self-evident in the case of belting, hose, rubber-covered rolls, etc., where flexibility and/or elasticity are apparently prime requisites, but nevertheless the interception and safe-transmission of impulses or stresses with a minimum of vibration and noise are certainly of inestimable value. The use of rubber parts elsewhere in the automobile and general engineering field is unquestionably solely for the suppression or elimination of vibration. Recognition of the importance of rubber parts for such service came with the organization early in 1927, at the request of the Society of Automotive Engineers, of a committee to make a study of the most important characteristics of rubber necessary in such service and finally to set up standards of tests for these properties. This committee was formed by the American Society for Testing Materials and is composed of a number of the leading automotive engineers of the country and rubber technologists from the leading rubber companies. The S. A. E. also has an official representative. The scope of the work of this committee includes hardness testing, deflection under compression and compression-set (cold flow), resistance to cold, and dynamic fatigue, but to date its active efforts have been confined largely to the first two. The trend toward the use of rubber vibration insulators in railway work, both between ties and rails and in the cars themselves, is opening up a virgin field of enormous importance, and certainly shows the importance of these properties and the necessity for standardized tests. Of course, good aging qualities, resistance to abrasion, oil and heat, and relatively high tensile, shear, cutting and tearing strengths are important in the life of the part (but to varying degrees depending on the service intended). In addition, a standardized test for the adhesion of rubber to metal is now imperative. At present most specifications for motor supports in which rubber is bonded to metal require a direct pull, perpendicular to the metal-rubber interface, of 250 lbs. per sq. in. minimum, with actual values ranging up to over 1000 lbs. per sq. in.

scholarly journals Statistical method for the determination of equivalence of automated test procedures

2003 ◽  
Vol 25 (6) ◽  
pp. 123-127 ◽  
Author(s):  
K. Rick Lung ◽  
Mary A. Gorko ◽  
Jennifer Llewelyn ◽  
Norman Wiggins
Keyword(s):  
Test Methods ◽  
Test Method ◽  
Content Uniformity ◽  
Solid Dosage Forms ◽  
Test Procedures ◽  
Solid Dosage ◽  
Automated Test ◽  
Student’S T ◽  
Manual Test

In the development of test methods for solid dosage forms, manual test procedures for assay and content uniformity often precede the development of automated test procedures. Since the mode of extraction for automated test methods is often slightly different from that of the manual test method, additional validation of an automated test method is usually required. In addition to compliance with validation guidelines, developers of automated test methods are often asked to demonstrate equivalence between the manual and automated test methods. There are problems associated with using the traditional zero-difference hypothesis tests (such as the Student's t-test) for demonstrating equivalence. The use of the Westlake Interval and Schuirmann's Two One-sided test as more rigorous methods of demonstrating equivalence is discussed.

scholarly journals Fracture Test Methods: Current Status

1992 ◽  
Vol 1 (3) ◽  
pp. 096369359200100
Author(s):  
P Davies
Keyword(s):  
Standardized Tests ◽  
Structural Integrity ◽  
Data Interpretation ◽  
Test Methods ◽  
Standard Test ◽  
Test Method ◽  
Current Status ◽  
Delamination Resistance ◽  
Fracture Tests ◽  
Industrial Standards

Fracture tests to measure delamination resistance are among the most widely used non-standardized tests currently performed on composite materials. Unfortunately it has been shown that the values obtained from such tests can vary by a factor of two according to specimen geometry and data interpretation. It is therefore essential that a standard test method be developed. This presentation will describe the current efforts directed towards an internationally accepted test method, involving the European Structural Integrity Society (ESIS), ASTM and the Japanese Industrial Standards Group.

Sign in / Sign up

Export Citation Format

Share Document