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in subjects: "Impact Strength"

open access

Long-term aging of type 308 stainless steel welds: Effects on properties and microstructure

Multipass gas tungsten arc welds with type 308 stainless steel filler metal in type 304L base plate have been aged at 400, 475, or 550{degrees}C for times up to 5,000 h. The changes in mechanical properties as a result of these agings have been followed with tensile, impact, and fracture toughness testing, using subsize tensile, half-size Charpy, and 0.45T compact specimens, respectively. The changes in the microstructure were evaluated with optical and transmission electron microscopy. Relativ… more

Date: September 1, 1994

Creator: Alexander, D. J.; Vitek, J. M. & David, S. A.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Simulation of a ceramic impact experiment using the SPHINX smooth particle hydrodynamics code

We are developing statistically based, brittle-fracture models and are implementing them into hydrocodes that can be used for designing systems with components of ceramics, glass, and/or other brittle materials. Because of the advantages it has simulating fracture, we are working primarily with the smooth particle hydrodynamics code SPHINX. We describe a new brittle fracture model that we have implemented into SPHINX, and we discuss how the model differs from others. To illustrate the code`s cu… more

Date: August 1, 1996

Creator: Mandell, D. A.; Wingate, C. A. & Schwalbe, L. A.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Examination of shaped charge liner shock loading

A series of experiments was conducted for the purpose of achieving a more fundamental understanding of the shaped charge liner shock loading environment. The test configuration, representing the middle portion of a shaped charge, consists of a 50 mm deep, 100 mm tall, and 2 mm thick copper plate driven by 50 mm deep, 100 mm tall, tapered thickness wedge of LX-14. An electrically driven 50 mm square flyer is used to surface initiate the base of the LX-14 causing a plane detonation wave to propag… more

Date: July 1, 1996

Creator: Murphy, M. J.; Moore, T. W.; Lee, C. G.; Breithaupt, R. D. & Avara, G. R.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Evaluation of seismic spatial interaction effects through an impact testing program

The consequences of non-seismically qualified objects falling and striking essential, seismically qualified objects is an analytically difficult problem to assess. Analytical solutions to impact problems are conservative and only available for simple situations. In a nuclear facility, the numerous sources'' and targets'' requiring evaluation often have complex geometric configurations, which makes calculations and computer modeling difficult. Few industry or regulatory rules are available for t… more

Date: January 1, 1993

Creator: Thomas, B.D. & Driesen, G.E.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Dynamic response of rigid polyurethane foam

The dynamic characteristics of six rigid polyurethane foams were studied at impact velocities from 15.24 to 60.96 m/s (50 to 200 ft/s). A test technique developed for crushing confined samples is described. The dynamic properties of materials tested are reported by both graphical and tabular methods.

Date: September 1, 1976

Creator: Daniel, R. A.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Some design considerations for pbar target sweeping station

This report summarizes the results of some recent calculations useful to design the beam sweeping station to produce high intensity pbar beam at AP0. With various on-going and planned intensity upgrade at the accelerator including the main injector the primary beam intensity on the pbar target is expected to increase. But some complications would arise from the existing method of pbar production. A study of the heavy metal targets used when the beam intensity was about 1.0 {times} 10{sup 12}, h… more

Date: June 1, 1991

Creator: Bhat, C.M.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Impact analysis of shipping casks

Shipping casks are being used in the United States Department of Energy to transport irradiated experiments, reactor fuel, radioactive waste, etc. One of the critical requirements in shipping cask analysis is the necessity to withstand severe impact environments. It is still conventional to develop the design and to verify the design requirements by hand calculations. Full three dimensional computations of impact scenarios have been performed but they are too expensive and time consuming for de… more

Date: January 1, 1989

Creator: Pfeiffer, P. A. & Kennedy, J. M.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Impact strength of the uranium-6 weight percent niobium alloy between -198/sup 0/ and +200/sup 0/C

A study was conducted to determine if a ductile-to-brittle transition wxisted for the uranium-6 wt % niobium (U-6Nb) alloy. Standard V-notched Charpy bars were made from both solution-quenched and solution-quenched and aged U-6Nb alloy and were tested between -198/sup 0/ and +200/sup 0/C. It was found that a sharp ductile-brittle transition does not exist for the alloy. A linear relationship existed between test temperature and impact strength, and the alloy retained a significant amount of imp… more

Date: September 1, 1981

Creator: Anderson, R.C.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Explosive shaped charge penetration into tuff rock

Analysis and data for the use of Explosive Shaped Charges (ESC) to generate holes in tuff rock formation is presented. The ESCs evaluated include Conical Shaped Charges (CSC) and Explosive Formed Projectiles (EFP). The CSCs vary in size from 0.158 to 9.1 inches inside cone diameter. The EFPs were 5.0 inches in diameter. Data for projectile impact angles of 30 and 90 degrees are presented. Analytically predicted depth of penetration data generally compared favorably with experimental data. Predi… more

Date: October 1, 1988

Creator: Vigil, M.G.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Elevated drum testing Phase 1 test plan

An important part of the Hanford environmental mission is the packaging, transportation, and storage of solid radioactive wastes in metal drums. Presently storage drums are placed four to a wooden pallet with the drums banded to each other. Palletized drums are stacked three units high in pre-engineered steel structures in the 200 Area of the Hanford site. Permitted storage space is expensive to construct, maintain, and operate. Storage capacity is increased if additional drum can be stacked wi… more

Date: September 1, 1994

Creator: McBeath, R. S. & Meeuwsen, P. V.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Experimental program to study the mechanical properties of beryllium. A status report

Mechanical properties of Be were studied by launching flyers by a gas gun to strike a Be target backed by a LiF window. The motion of the Be-LiF interface was monitored. The effect of the yield strength of the LiF was negligible. (FS)

Date: July 1, 1980

Creator: Steinberg, Daniel J.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Mechanical strength model for plastic bonded granular materials at high strain rates and large strains

Modeling impact events on systems containing plastic bonded explosive materials requires accurate models for stress evolution at high strain rates out to large strains. For example, in the Steven test geometry reactions occur after strains of 0.5 or more are reached for PBX-950l. The morphology of this class of materials and properties of the constituents are briefly described. We then review the viscoelastic behavior observed at small strains for this class of material, and evaluate large stra… more

Date: July 1, 1997

Creator: Browning, R.V. & Scammon, R.J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Mechanical properties of thermally aged cast stainless steels from Shippingport reactor components

Thermal embrittlement of static-cast CF-8 stainless steel components from the decommissioned Shippingport reactor has been characterized. Cast stainless steel materials were obtained from four cold-leg check valves, three hot-leg main shutoff valves, and two pump volutes. The actual time-at-temperature for the materials was {approximately}13 y at {approximately}281 C (538 F) for the hot-leg components and {approximately}264 C (507 F) for the cold-leg components. Baseline mechanical properties f… more

Date: April 1995

Creator: Chopra, O. K. & Shack, W. J.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Elastic/Plastic Drop Analysis Using Finite Element Techniques

A Spent Nuclear Fuel (SNF) can, which is called the High Integrity Can (HIC), is being designed at the Idaho National Engineering and Environmental Laboratory (INEEL). Its intended use is to contain SNF sent to the Idaho Nuclear Technology and Engineering Center (INTEC). INTEC will then do the final work with the HIC to send it to the repository at Yucca Mountain, Nevada, for long-term storage. One portion of the analysis, which was required for the HIC, was accidental drop scenarios. This cons… more

Date: August 1, 1999

Creator: Spears, R. E.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Properties of V-4Cr-4Ti for Application as Fusion Reactor Structural Components

Vanadium-base alloys are promising candidate materials for application in fusion reactor first-wall and blanket structures because they offer several important advantages, i.e., inherently low irradiation-induced activity, good mechanical properties, good compatibility with lithium, high thermal conductivity, and good resistance to irradiation-induced swelling and damage. As part of a program to screen candidate alloys and develop an optimized vanadium-base alloy, extensive investigations of va… more

Date: August 1, 1994

Creator: Chung, H. M.; Loomis, B. A. & Smith, D. L.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Chemical and mechanical performance properties for various final waste forms -- PSPI scoping study

The US DOE is obtaining data on the performance properties of the various final waste forms that may be chosen as primary treatment products for the alpha-contaminated low-level and transuranic waste at the INEL`s Transuranic Storage Area. This report collects and compares selected properties that are key indicators of mechanical and chemical durability for Portland cement concrete, concrete formed under elevated temperature and pressure, sulfur polymer cement, borosilicate glass, and various f… more

Date: September 1996

Creator: Farnsworth, R. K.; Larsen, E. D.; Sears, J. W.; Eddy, T. L. & Anderson, G. L.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

ADVANCED PRESSURE VESSEL MATERIALS.

Data on 5Cr - 3Mo - 12Ni alloy, PH13 - 8Mo and Iconel 718 for pressure vessel application are given. The 5Cr - 3Mo - 12Ni posseses characteristics suited to uniform aging of heavy sections. Tensile and toughness properties are good, and structural stability up to 315 deg C is adequate. Weldability with 12Ni - 3Cr - 3Mo filler material is good but 12Ni - 5Cr - 3Mo filler is more efficient. Aging characteristics of PH13 - 8Mo may not be suited to uniform aging of heavy sections. Excellent tensile… more

Date: October 31, 1969

Creator: Robertshaw, F.C.; Stephan, H.R. & McConnelee, J.E.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Heat source component development program. Quarterly report, July--September 1977

The impact-member work is directed to gaining needed knowledge and understanding of the response of materials and designs to heat-source impact conditions, and applying the technology gained to the selection or development and demonstration of preferred impact-member materials and designs that will insure fuel containment in the event of earth impact. During the past quarter, major effort has been directed to analyzing the impact-member problem in the light of knowledge and understanding gained… more

Date: October 1, 1977

Creator: Foster, E.L. Jr. (comp.)

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Extended Development Work to Validate a HLW Calcine Waste Form via INL's Cold Crucible Induction Melter

To accomplish calcine treatment objectives, the Idaho Clean-up Project contractor, CWI, has chosen to immobilize the calcine in a glass-ceramic via the use of a Hot-Isostatic-Press (HIP); a treatment selection formally documented in a 2010 Record of Decision (ROD). Even though the HIP process may prove suitable for the calcine as specified in the ROD and validated in a number of past value engineering sessions, DOE is evaluating back-up treatment methods for the calcine as a result of the techn… more

Date: September 1, 2011

Creator: King, James A. & Maio, Vince

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Magnetic thin films formed in a glow discharge. Final report

Since this project is a continuation of a cooperative effort between UMR and General Motor Research Laboratories (GMR), it seemed fitting to provide some background information which was instrumental in the evolution of this program. A family of filled epoxies that can be cast-to-size into sheet metal stamping dies has been developed by GMR. Advantages of this material over commercial plastic tooling materials are a fast curing rate, high strength, and negligible volume shrinkage after curing. … more

Date: October 28, 1994

Creator: O`Keefe, T.J. & James, W.J.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Syntactic foam supports. Final report

Foams consisting of blends of a polyimide resin and glass microbubbles were prepared to provide thermal protection and energy absorption. With the selected type of glass microbubble, tests wre conducted to measure the effect of foam formulation, microbubble strength, and molding pressure on certain mechanical, thermal, and environmental properties.

Date: June 1, 1980

Creator: McIlroy, H. M.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Cask drop testing and analysis

Packages designed to carry spent fuel within the United States must be approved and certified by the Nuclear Regulatory Commission (NRC). This is done by submitting an application to the NRC that describes the package design and provides a detailed technical evaluation of its performance under a variety of normal and accident conditions. These technical evaluations are often based on a combination of theoretical analysis and experimental testing that can be particularly important if it is neces… more

Date: January 1, 1989

Creator: Shappert, L. B.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Overview of crash and impact analysis at Lawrence Livermore National Laboratory

This work provides a brief overview of past and ongoing efforts at Lawrence Livermore National Laboratory (LLNL) in the area of finite-element modeling of crash and impact problems. The process has been one of evolution in several respects. One aspect of the evolution has been the continual upgrading and refinement of the DYNA, NIKE, and TOPAZ family of finite-element codes. The major missions of these codes involve problems where the dominant factors are high-rate dynamics, quasi-statics, and … more

Date: August 5, 1993

Creator: Logan, R. W. & Tokarz, F. J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Multibarrier waste forms. Part II. Characterization and evaluation.

The multibarrier concept for the storage of radioactive waste is to use up to three barriers to isolate radionuclides from the environment: a solidified waste inner core, an impervious coating, and a metal matrix. The four multibarrier waste forms were evaluated for thermal stability (volatility), mechanical strength (impact resistance), and leach resistance. This report discusses the characterization of the multibarrier waste forms and compares them to reference calcine and glass waste forms. … more

Date: August 1, 1979

Creator: Rusin, J.M.; Gray, W.J. & Wald, J.W.

Item Type: Report

Partner: UNT Libraries Government Documents Department