Combat Helmet-Headform Coupling Characterized From Blunt Impact Events

2011 ◽  
Author(s):  
Kimberly B. Vasquez ◽  
Katie P. Logsdon ◽  
Daniel B. Dorman ◽  
Valeta Carol Chancey
Keyword(s):  
Head Injury ◽  
Impact Testing ◽  
International Standard Organization ◽  
Impact Behavior ◽  
Peak Acceleration ◽  
Test Methodology ◽  
Blunt Impact ◽  
Standard Organization ◽  
Ease Of Access ◽  
Military Helmet

Observed head injury has historically been mechanically related to headform center of gravity (CG) acceleration. Helmets (motorcycle, sports, military, etc.) are evaluated based on the headform CG peak acceleration for blunt impacts. However, recent interest has shifted to collecting data from the helmet shell itself, as it is an optimal location for mounting sensors due to ease of access, sufficient surface area availability, and limited interference to the wearer. In order to accurately predict head injury from data collected on the helmet shell, the helmet and headform must be rigidly coupled. Headform-helmet fit typically is dependent on the pad fitting system and the person mounting the helmet to the headform because a standard states which headform to use. The objective of this study is to compare the Department of Transportation (DOT) headform (currently used in military blunt impact testing) to the more anthropomorphic International Standard Organization (ISO) half headform. Testing was completed on a monorail drop tower to analyze the effect of helmet/headform coupling on the blunt impact behavior of ACH helmets using FMVSS test methodology. Three headform configurations were used: the DOT headform (standard for military helmet blunt impact testing) with required surrogate chin, the ISO half headform (standard for ASTM helmet testing), and the ISO half headform with a surrogate chin. The two currently field-approved pad types were also used to determine best headform-helmet fit. Results from these series of tests will be presented, including headform peak acceleration and relative motion between the helmet and headform.

Technical Committee 46 “Information and Documentation” of the International Organization for Standardization (ISO/ TC 46) Celebrates its 60th Anniversary

2009 ◽  
pp. 80-89
Author(s):  
Olga A. Diakonova ◽  
Nina F. Kornoushenko
Keyword(s):  
International Organizations ◽  
Information Science ◽  
Technical Committee ◽  
International Standards ◽  
International Standard Organization ◽  
Library And Information Science ◽  
60Th Anniversary ◽  
Working Groups ◽  
Standard Organization ◽  
Information Work

Technical Committee 46 «Information and Documentation» of the International Standard Organization (ISO/TC 46) is published. Even a short description of ISO/TC 46 activities visually demonstrates what incredible and truly revolutionary changes happened during the last 60 years in the library, documentation and information work. The modern ISO/TC 46 structure is given, the work trends of its four subcommittees and numerous working groups, the interaction with other ISO technical committees and international organizations is characterized. Importance of standardization problems in the field of library and information science and of librarianship, in particularly, is confirmed by the authors’ practical work lasting for many year. The proposed information permits to better imagine the preparation process of the international standards and necessity of Russian specialists’ participation.

scholarly journals Effects of temperature and impactor nose diameter on the impact behavior of PA6 and PP thermoplastic composites

2018 ◽  
Vol 51 (1) ◽  
pp. 64-74 ◽  
Author(s):  
Akar Dogan ◽  
Yusuf Arman
Keyword(s):  
Load Capacity ◽  
Testing Machine ◽  
Polyamide 6 ◽  
Impact Testing ◽  
Impact Behavior ◽  
Thermoplastic Composites ◽  
Test Machine ◽  
Effects Of Temperature ◽  
Impact Energies ◽  
The Impact

In this study, the effects of temperature and impactor nose diameter on the impact behavior of woven glass-reinforced polyamide 6 (PA6) and polypropylene (PP) thermoplastic composites were investigated experimentally. Impact energies are chosen as 10, 30, 50, 70, 90, 110, 130, and 170 J. The thickness of composite materials is 4 mm. Impact tests were performed using a drop weight impact testing machine, CEAST-Fractovis Plus, and the load capacity of test machine is 22 kN. Hemispherical impactor nose diameter of 12, 7, and 20 mm were used as an impactor. The tests are conducted at room temperature (20°C and 75°C). As a result, the PP composites of the same thickness absorbed more energy than PA6 composites. The amount of absorbed energy of PP and PA6 composites decreased with temperature.

scholarly journals Vehicle Management System Using RFID

2021 ◽  
Vol 04 (12) ◽  
Author(s):  
Sharra Mae B. Fernandez ◽  
Keyword(s):  
Radio Frequency Identification ◽  
Management System ◽  
International Standard Organization ◽  
International Electrotechnical Commission ◽  
School Year ◽  
State College ◽  
Standard Organization ◽  
And Performance ◽  
Vehicle Management ◽  
Vehicle Management System

The main purpose of this study was to provide a repository area for all registered vehicle in an organized and systematic filing, archiving and reports can be printed in real time. The system can prompt the users that the validity permit of radio frequency identification tag will be expired and need for renewal. Specifically, this paper sought to design and develop the Vehicle Management System Using RFID and evaluated its level of usability and performance as perceived by the target users. A total of 189 respondents participated in the study that was composed of five experts, three employees and 181 students, faculty and staff registered for School Year 2017-2018 using a standard questionnaire International Standard Organization/International Electrotechnical Commission 25010. Descriptive research was employed on this study based on the set objectives. Findings of the study, revealed that the functionality, the level of usability and its performance were interpreted as Very Good. These findings suggested that respondents were impressed in terms of easiest registration and monitoring of the registered vehicles that enters in and out of Northern Iloilo Polytechnic State College, Main Campus.

IMPLEMENTASI SISTEM PELAPORAN SARANA DAN PRASARANA KEGIATAN BELAJAR MENGAJAR BERBASIS ANDROID (STUDI KASUS : INSTITUT INFORMATIKA DAN BISNIS DARMAJAYA)

2019 ◽  
Vol 19 (1) ◽  
pp. 47-53
Author(s):  
Yuni Puspita Sari ◽  
Rionaldi Ali
Keyword(s):  
Higher Education ◽  
Information System ◽  
Quality Standard ◽  
International Standard Organization ◽  
Iso 9001 ◽  
Prototype Model ◽  
Main Aspect ◽  
Standard Organization ◽  
System Information

Informatics and Business Institute Darmajaya is one of higher education institute that conduct quality standard in service area.  Acknowled gement to the service proven by ISO 9001:2015 certificate issued by International Standard Organization since 2008.  One of standard in our quality standard is concern about the quality of service, and impremented in the form of fascility monitoring in Darmajaya campus.  Facilities and infrastucture particulary classromm and laboratorium which is the main aspect in the learning process between lecturer and student to conduct course interaction.This application designed to build a system to collect complaint report that could help to support course interaction.  Prototype model used in the design of these system.Our reseach has been resulting and application to collect complaint report about facilities and infrastucture than run on android based system.  The application give support to process the report and also complaint system information.  We concluded that our system can be use for real-time monitoring for facilities and infrastucture.   Keywords: Facilities and Infrastructure, Complaint Report Information System, Android Base. 

An Information Security Model for Implementing the New ISO 27001

2019 ◽  
pp. 219-242
Author(s):  
Margareth Stoll
Keyword(s):  
Information Security ◽  
Data Privacy ◽  
Business Processes ◽  
International Standard Organization ◽  
Security Model ◽  
Privacy And Security ◽  
Holistic Model ◽  
Common Structure ◽  
Standard Organization ◽  
Iec 27001

The importance of data privacy, information availability, and integrity is increasingly recognized. Sharpened legal requirements and increasing data leakages have further promoted data privacy. In order to implement the different requirements in an effective, efficient, and sustainable way, the authors integrate different governance frameworks to their holistic information security and data privacy model. More than 1.5 million organizations worldwide are implementing a standard-based management system. In order to promote the integration of different standards, the International Standard Organization (ISO) released a common structure. ISO/IEC 27001 for information security management was changed accordingly in October 2013. The holistic model fulfills all requirements of the new version. Its implementation in several organizations and the study's results are described. In that way data privacy and security are part of all strategic, tactical, and operational business processes, promote corporate governance and living security, as well as the fulfillment of all standard requirements.

Shock Load Tests of Anti- Vibration Mountings

1957 ◽  
Vol 61 (553) ◽  
pp. 50-52
Author(s):  
Rolt Hammond
Keyword(s):  
Shock Loading ◽  
Testing Machine ◽  
Operating Conditions ◽  
Impact Testing ◽  
Maximum Height ◽  
Peak Acceleration ◽  
Maximum Weight ◽  
Shock Loads ◽  
Load Tests ◽  
The Impact

There are two types of shock loading to which aircraft components are subjected, namely: medium shock loads which can heavily damage equipment; and shocks of high impact, such as those imposed during crash landing, causing the equipment to be torn loose from its mounting, with danger of injury or even death to aircraft personnel.An impact shock machine has been installed recently in a laboratory for studying this important problem. The machine is capable of providing calibrated shock tests up to a maximum peak acceleration of llg, and of simulating the shock loads normally experienced under everyday operating conditions. Apparatus being tested is mounted on a frame bolted rigidly to the table of the impact testing machine, which has been designed to take specimens up to a maximum weight of 400 lb., with maximum overall dimension equivalent to a cube of 30 inches side. A specimen under test is dropped from a maximum height of 5 ft., falling freely.

Dependence of the Head Injury Criterion and Maximum Acceleration on Headform Mass and Initial Velocity in Tests Simulating Pedestrian Impacts With Vehicles

2013 ◽  
Vol 135 (11) ◽  
Author(s):  
T. P. Hutchinson
Keyword(s):  
Head Injury ◽  
Initial Velocity ◽  
Impact Testing ◽  
Nonlinearity Parameter ◽  
Power Functions ◽  
Maximum Displacement ◽  
Maximum Acceleration ◽  
Head Injury Criterion ◽  
Specific Assumption ◽  
The Impact

Impact testing of pedestrian headforms is usually conducted at one velocity and with one mass of headform, but real impacts occur at a range of velocities and masses. A method is proposed to predict the Head Injury Criterion (HIC) and similar quantities at other velocities from their values observed under test conditions. A specific assumption is made about acceleration during the impact as related to displacement, its differential (instantaneous velocity), mass of headform, and initial velocity: namely, that it is the product of a power function of displacement (representing a possibly nonlinear spring) and a term that includes a type of damping. This equation is not solved, but some properties of the solution are obtained: HIC, maximum acceleration, and maximum displacement are found to be power functions of mass of headform and initial velocity. Expressions for the exponents are obtained in terms of the nonlinearity parameter of the spring. Simple formulae are obtained for the dependence of HIC, maximum acceleration, and maximum displacement on velocity and mass. These are relevant to many types of impact.

Herbert R. Lissner: The Father of Impact Biomechanics

2020 ◽  
Vol 142 (3) ◽  
Author(s):  
Albert I. King ◽  
Michele J. Grimm
Keyword(s):  
Head Injury ◽  
Human Brain ◽  
Mechanical Response ◽  
Lead Author ◽  
Blunt Impact ◽  
Impact Biomechanics ◽  
Injury Mechanisms ◽  
The Many ◽  
Insight Into

Abstract Professor Herbert R. Lissner was a pioneer in impact biomechanics, having initiated research on the injury mechanisms, mechanical response, and human tolerance of the human brain to blunt impact 80 years ago—in 1939. This paper summarizes the contributions made by Professor Lissner in head injury as well as in the many areas of impact biomechanics in which he was involved. In 1977, the Bioengineering Division of ASME established the H. R. Lissner Award to recognize outstanding career achievements in the area of biomechanics. In 1987, this award was converted to a society-wide Medal, and to date it has been awarded to 44 exemplary researchers and educators. The lead author of this paper was Professor Lissner's first and only Ph.D. student, and he offers a unique insight into his research and contributions.

Analysis and Development of Performance-Based Requirements for Railroad Tank Cars

2014 ◽  
Author(s):  
Steven W. Kirkpatrick ◽  
Robert A. MacNeill ◽  
Francisco Gonzalez
Keyword(s):  
Structural Integrity ◽  
The United States ◽  
Impact Testing ◽  
Impact Behavior ◽  
Safety Regulations ◽  
Significant Research ◽  
The Government ◽  
Current Impact ◽  
Test Requirements ◽  
The Impact

There has been significant research in recent years to analyze and improve the impact behavior and puncture resistance of railroad tank cars. Ultimately, the results of this work will be used by the Government regulatory agencies in the United States and Canada to establish performance-based testing requirements and to develop methods to evaluate the crashworthiness and structural integrity of different tank car designs. This paper describes analyses of current impact testing requirements and impact test methodologies using detailed finite element analyses (FEA). The results of these analyses are used to identify characteristics of the test methodologies that are desirable or undesirable for the test requirements in future tank car safety regulations.

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