View Latest Blog Entries
Testing & Assessment Certification Standard & Regulation Aging Wires & Systems Maintenance & Sustainment Protection & Prevention Management Conference & Report Research Miscellaneous Arcing
Popular Tags
Visual Inspection High Voltage AS50881 MIL-HDBK MIL-HDBK-525 FAR Electromagnetic Interference (EMI) AS4373 Maintenance FAR 25.1707 Wire System Arcing Damage
All Tags in Alphabetical Order
2021 25.1701 25.1703 abrasion AC 33.4-3 AC 43 Accelerated Aging accessibility ADMT Aging Systems AIR6808 AIR7502 Aircraft Power System aircraft safety Aircraft Service Life Extension Program (SLEP) altitude arc damage Arc Damage Modeling Tool Arc Fault (AF) Arc Fault Circuit Breaker (AFCB) Arc Track Resistance Arcing Arcing Damage AS22759 AS22759/87 AS23053 AS29606 AS4373 AS4373 Method 704 AS50881 AS5692 AS6019 AS6324 AS81824 AS83519 AS85049 AS85485 AS85485 Wire Standard ASTM B355 ASTM B470 ASTM D150 ASTM D2671 ASTM D8355 ASTM D876 ASTM F2639 ASTM F2696 ASTM F2799 ASTM F3230 ASTM F3309 ATSRAC Attenuation Automated Wire Testing System (AWTS) Automotive Avionics backshell batteries bend radius Bent Pin Analysis Best of Lectromec Best Practice bonding Cable Cable Bend cable testing Carbon Nanotube (CNT) Certification cfr 25.1717 Chafing Chemical Testing Circuit Breaker circuit design Circuit Protection cleaning clearance Coaxial cable cold bend collision comparative analysis Compliance Component Selection Condition Based Maintenance Conductor Conductor Testing conductors conduit Connector connector installation Connector rating connector selection connector testing connectors contacts Corona Corrosion Corrosion Preventing Compound (CPC) corrosion prevention Cracking creepage D-sub data analysis data cables degradat Degradation Delamination Derating design safety development diagnostic Dielectric breakdown dielectric constant Dimensional Life disinfectant Distributed Power System DO-160 dry arc dynamic cut through E-CFR electric aircraft Electrical Aircraft Electrical Component Electrical Power Electrical Testing Electrified Vehicles Electromagnetic Interference (EMI) Electromagnetic Vulnerability (EMV) Electrostatic Discharge EMC EMF EMI EN2235 EN3197 EN3475 EN6059 End of Service Life End of Year Energy Storage engines Environmental Environmental Cycling environmental stress ethernet eVTOL EWIS certification EWIS Component EWIS Design EWIS Failure EWIS sustainment EWIS Thermal Management EZAP FAA FAA AC 25.27 FAA AC 25.981-1C FAA Meeting failure conditions Failure Database Failure Modes and Effects Analysis (FMEA) FAQs FAR FAR 25.1703 FAR 25.1707 FAR 25.1709 Fault fault tree Filter Line Cable Fixturing Flammability fleet reliability Flex Testing fluid exposure Fluid Immersion Forced Hydrolysis fuel system fuel tank ignition Functional Hazard Assessment functional testing Fundamental Articles Fuse Future Tech galvanic corrosion Glycol Gold Gold plating Green Taxiing Grounding hand sanitizer handbook Harness Design harness protection hazard Hazard Analysis health monitoring heat shrink heat shrink tubing high current high Frequency high speed data cable High Voltage High Voltage Degradation HIRF History Hot Stamping Humidity Variation HV connector HV system ICAs IEC 60851 IEC60172 IEEE immersion insertion loss Inspection installation installation safety Instructions for Continued Airworthiness insulating material insulating tape Insulation insulation breakdown insulation resistance insulation testing interchangeability IPC-D-620 ISO 17025 Certified Lab ISO 9000 J1673 Kapton Laser Marking life limit life limited parts Life prediction life projection Lightning lightning protection liquid nitrogen lithium battery lunar Magnet wire maintainability Maintenance Maintenance costs Mandrel mean free path measurement mechanical stress Mechanical Testing MECSIP MIL-C-38999 MIL-C-85485 MIL-DTL-17 MIL-DTL-23053E MIL-DTL-3885G MIL-DTL-38999 MIL-E-25499 MIL-HDBK MIL-HDBK-1646 MIL-HDBK-217 MIL-HDBK-454 MIL-HDBK-516 MIL-HDBK-522 MIL-HDBK-525 MIL-HDBK-683 MIL-STD-1353 MIL-STD-1560 MIL-STD-1798 MIL-STD-464 MIL-T-7928 MIL-T-7928/5 MIL-T-81490 MIL-W-22759/87 MIL-W-5088 MIL–STD–5088 Military 5088 modeling moon MS3320 NASA NEMA27500 Nickel nickel plating No Fault Found OEM off gassing Outgassing Over current Overheating of Wire Harness Parallel Arcing part selection Partial Discharge partial discharge at altitude Performance physical hazard assessment Physical Testing polyamide polyimdie Polyimide-PTFE Power over Ethernet power system Power systems predictive maintenance Presentation Preventative Maintenance Program Probability of Failure Product Quality PTFE pull through Radiation Red Plague Corrosion Reduction of Hazardous Substances (RoHS) regulations relays Reliability Research Resistance Revision C Rewiring Project Risk Assessment S&T Meeting SAE SAE Committee Sanitizing Fluids Secondary Harness Protection separation separation distance Separation Requirements Series Arcing Service Life Extension Severe Wind and Moisture-Prone (SWAMP) Severity of Failure shelf life Shield Shielding Shrinkage signal signal cable Silver silver plated wire silver-plating skin depth skin effect Small aircraft smoke Solid State Circuit Breaker Space Certified Wires Splice standards Storage stored energy superconductor supportability Sustainment System Voltage Temperature Rating Temperature Variation Test methods Test Pricing Testing testing standard Thermal Circuit Breaker Thermal Endurance Thermal Index Thermal Runaway Thermal Shock Thermal Testing tin Tin plated conductors tin plating tin solder tin whiskering tin whiskers top 5 Transient Troubleshooting TWA800 UAVs UL94 USAF validation verification video Visual Inspection voltage voltage differential Voltage Tolerance volume resistivity vw-1 wet arc white paper whitelisting Winding wire Wire Ampacity Wire Bend Wire Certification Wire Comparison wire damage wire failure wire performance wire properties Wire System wire testing Wire Verification wiring components work unit code

2020 was certainly a unique year.

To start, the Lectromec team would like to thank our clients for your business and continued trust in our engineering and testing capabilities. We would also like to thank our readers for the opportunity to share information with the community.

With that said, 2020 was the year that Lectromec’s website repository of articles on EWIS and EWIS related topics exceeded 300. The best part is that there is so much more to cover, and we will continue to do so in 2021.

Before we get ahead of ourselves, it is time for the yearly gathering of the most popular articles of the last 366 days. While we published fewer articles in 2020, the quality did not diminish. Here are the top 5 of 2020.

#5 – Dielectric Constant

Dielectric testing for some components is easy and straight forward. However, as the geometry becomes more complex, so to does the calculation and means for testing. Follow the link to the article to learn more.

This article was one of the more technically in-depth articles of 2020 and with good reason. Some properties are taken for granted with wires and cables until they are needed for precision applications. A cable’s dielectric constant is uninteresting until the integrity of high-frequency signals becomes critical. Understanding the proper means to measure and the implications of the results is non-trivial.

This article provides a deeper description of the dielectric property of cables and factors that are important for testing. Article

#4- Light Weight versus Normal Weight Wire Constructions

It is frequently said that weight is among the most important parameters for aerospace vehicles. Every LRU, component, and wire is examined for its quality, performance, and weight. It is no surprise that this article is among the top 5 of 2020.

Diving into the performance differences between light and normal weight construction wires, we review how some of these performance factors impact where the use of light-weight constructions are prohibited. Article

#3 – Understanding Life Prediction Technology

When we can look at a banana we can guess at the banana’s firmness and taste. This is possible because we have been exposed to bananas throughout their life cycle and know what the colors and spots mean. Unfortunately, the aging of wires and cables is not like a banana. We cannot simply look at a wire/cable and identify its current condition or the remaining reliable service life.

For those looking to get a better grasp on what life prediction technology means to EWIS, this is a good place to start. Article

Even in the best cases, mining maintenance data does require knowledge of the topic and manual effort. Of course, having the right tools can accelerate the data filtering and analysis process. Follow the link to the article to learn more.

#2 – Review of EWIS for Sustainment

Perhaps because EWIS sustainment has become more important, or because fewer aircraft were flying, EWIS sustainment was the second most popular article of 2020.

At a fundamental level, engineering is about measuring everything that matters. In the last decade, the efforts of organizations to measure EWIS has progressively increased. Perhaps this is because wiring is now considered a system, or because regulations and requirements have emerged. Whatever the case, understanding the methods for EWIS maintenance data assessment is the first step to measuring the size of the problem. Article.

#1 – The Journey of an Aerospace Wire

This was Lectromec’s first infographic, and we suppose we should make more of them. This infographic stepped through the process and the steps to go from conductor and insulation to of a wire installed and maintained on an aircraft. Article

For 2021

We will continue to provide articles and information pertinent to the evolving needs of EWIS. In 2020, Lectromec’s lab added new capabilities including new equipment and test stands to support high-voltage and high-frequency testing, something that is a rapidly growing segment of the aerospace industry; we expect to have several articles discussing some ongoing tests.

Before the end of February, you can expect to see a new whitepaper available on Lectromec’s website. It is something that we have put a lot of time into and believe that many in this community will find value in reading it and sharing it with others.

In the next couple of months, Lectromec will publish our presentation to the MECSIP community from 2020. While the conference was canceled, that did not stop us from bringing the community together for a discussion on aging EWIS assessment.

Lastly, to everyone reading this article, the team here at Lectromec sincerely wishes our clients and readers all the best in 2021 and that the new year will be a full set of 365 better days.

Michael Traskos

Michael Traskos

President, Lectromec

Michael has been involved in wire degradation and failure assessments for more than a decade. He has worked on dozens of projects assessing the reliability and qualification of EWIS components. Michael is an FAA DER with a delegated authority covering EWIS certification and the chairman of the SAE AE-8A EWIS installation committee.