Physical and chemical test results of electrostatic safe flooring materials

This test program was initiated because a need existed at the Kennedy Space Center (KSC) to have this information readily available to the engineer who must make the choice of which electrostatic safe floor to use in a specific application. The information, however, should be of value throughout both the government and private industry in the selection of a floor covering material. Included are the test results of 18 floor covering materials which by test evaluation at KSC are considered electrostatically safe. Tests were done and/or the data compiled in the following areas: electrostatics, flammability, hypergolic compatibility, outgassing, floor type, material thickness, and available colors. Each section contains the test method used to gather the data and the test results

Thermal coefficient of delay for various coaxial and fiber-optic cables

Data are presented on the thermal coefficient of delay for various coaxial and fiber optic cables, as measured by the Frequency and Timing Systems Engineering Group and the Time and Frequency Systems Research Group. The measured pressure coefficient of delay is also given for the air-dielectric coaxial cables. A description of the measurement method and a description of each of the cables and its use at JPL and in the DSN are included. An improvement in frequency and phase stability by a factor of ten is possible with the use of fiber optics

It support for mass customization

Many authors have written about Mass Customization and its features and categories. Literature on the implementation of Mass Customization, and in particular the supporting information technology, is scant. This paper attempts to fill this gap by focusing on this subject. We determine the key functional requirements and identify possible implementations to show the existence of enabling information technologies for Mass Customization

Documentación de un sistema integrado de gestión en la empresa Flexco S.A.

Al igual que la calidad de los productos, el bienestar de los empleados y la prevención de la contaminación también se han convertido en un factor diferenciador de las empresas a nivel mundial; por lo tanto pensar en un Sistema Integrado de Gestión que integre normas de calidad, seguridad y salud ocupacional y gestión ambiental se ha convertido en un requisito indispensable para sobrevivir en un mercado altamente competitivo. Este trabajo tiene como objetivo documentar un Sistema Integrado de gestión en la empresa FLEXCO S.A., basados en los lineamientos de las normas ISO 9001:2008, ISO 14001:2004 y OSHAS 18001:2007, con el fin de brindarle a la organización una alternativa para ampliar su plan estratégico, ya que este se enfoca a la satisfacción del cliente, calidad del producto y penetración a nuevos mercados. Esta documentación es un aporte para que la empresa incluya en sus metas, la salud y seguridad ocupacional y el cuidado del medio ambiente, las cuales contribuyen a mejorar su competitividad, productividad y rentabilidad, al igual que la calidad y mejoramiento continuo.Like the product quality, employee welfare and the prevention of pollution have also become a differentiating factor for companies worldwide, so think of a Management System that integrates quality standards, occupational health and safety and environmental management has become a prerequisite for survival in a highly competitive market. This work aims to document an integrated system of management in the company FLEXCO SA, based on the guidelines of ISO 9001, ISO 14001 and OHSAS 18001, with the purpose of offering an alternative organization to expand its strategic plan that focuses on customer satisfaction, product quality and reach into new markets. This documentation is a contribution to the company structure to include on their goals, the health and occupational security and take care on the environment which contribute to improve competitiveness, productivity, profitability, like quality and continuous improvement

A portable Ku-band front-end test package for beam-waveguide antenna performance evaluation

A 34-m beam-waveguide (BWG) antenna has been built a Deep Space Station 13 (DDS 13) in the Goldstone Deep Space Communications Complex. This antenna is designed to be efficient at X-, Ku-, and Ka-bands, and it is the first NASA tracking antenna to use a BWG design. The design of a Ku-band test package for the new BWG antenna at 11.7-12.2 GHz is presented. Results of linear polarization measurements with the test package on the ground are also presented. This report is the fifth in a series of articles concerned with test package design and performance

Sistema estructural desplegable de arcos y bielas deslizantes

Patente ES 2588200 Sistema estructural desplegable de arcos y bielas deslizantesPatente de invención[Resumen] La invención se refiere a un sistema estructural de cubierta desplegable ligera para cubrir recintos tales como piscinas, pistas deportivas, invernaderos o cualquier otro que precise ser cubierto y descubierto. Se caracteriza porque está formado por un conjunto de arcos dispuestos en planos verticales que arrancan sobre elementos de rodadura u otro tipo de elementos de desplazamiento. Dichos arcos están conectados entre sí mediante bielas o barras biarticuladas, combinando bielas de articulaciones fijas con bielas de articulaciones deslizantes, lo que permite el plegado y desplegado. Los arcos pueden tener cualquier geometría o configuración, pudiendo tener forma poligonal, sección maciza, alveolada o en celosía

APPLICATION OF FMEA AND RCM IN DEVELOPING A STANDARD OPERATING PROCEDURE (SOP) FOR BELT CONVEYOR SPLICING

Belt conveyors are the most widely used material transportation systems in various industries because they are capable of continuously moving goods efficiently and consistently. This system consists of a belt driven by pulleys and a motor, enabling the transfer of large quantities of material in a relatively short time. Its reliability is highly influenced by the quality of the belt joint, making maintenance and splicing procedures crucial aspects. This study discusses the application of Failure Mode and Effect Analysis (FMEA) and Reliability Centered Maintenance (RCM) methods in developing a Standard Operating Procedure (SOP) for belt conveyor splicing. The study was conducted at PT. Indonesia Belting Solution during the period of June 1 – July 31, 2025, through field observations, technical interviews, documentation, and data analysis. The results of the identification show that the dominant failures occur at the belt joints in the form of breakage, tearing, and brittleness. FMEA analysis indicates that joint failure due to inaccurate splicing processes is the top priority with the highest Risk Priority Number (RPN). Through the RCM approach, a Condition Directed Maintenance strategy was established as the primary action, and an SOP for splicing using the finger splice and hot press methods was developed to improve joint quality. In addition to providing a structured evaluation of potential failures, this study emphasizes that the integration of FMEA and RCM can serve as a systematic basis for preparing standard procedures. The proposed SOP implementation is expected to enhance joint strength, extend belt service life, and reduce production downtime, thereby improving conveyor system reliability and overall operational efficiency