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NTS Chicago Expansion Phase 2: New Offices
August 2, 2016Phase 2 of our new Chicago area laboratory in Mt. Prospect, IL is almost completed, with 6,500 square feet of office space being added. It will contain 11 rooms, 2 conference rooms, a customer lounge, kitchen and reception area. This...
NTS Chicago Expansion Phase 1: Demising Walls
August 2, 2016Work has begun inside our new facility at 1660 Wall Street in Mount Prospect, IL and we have lots to share! The demising walls were recently constructed which will house all of the existing equipment at the current NTS Chicago location, plus three new...
Argentina HSE Statement Requirement Update
August 1, 2016Argentina has published Resolution 171/2016 in April, 2016 replacing Resolution 508[1] and the HSE (Highly Specialized Equipment) statement is no longer mandatory. However, the manufacturers can still opt to implement the statement or keep it as is if it’s already...
Methodology for Transient Thermal Analysis of Machine Gun Barrels Subjected to Burst Firing Schedules
August 1, 2016Authors: Ryan Hill and Logan McLeod This work presents a method for simulating the heating of machine gun barrels during burst firings. The method utilizes a two-dimensional axisymmetric finite element model which solves the highly transient convection input on the...
Analysis of Inter-Chamber Energy and Mass Transport in High-Low Pressure Gun Systems
August 1, 2016Authors: Ryan Hill and Logan McLeod Two assumptions are often made by lumped-parameter codes in the analysis of dual-chamber guns: (1) that the gas enters the large chamber at the propellant flame temperature, and (2) that the flow between the...
Modeling of Ordnance-Induced Pyrotechnic Shock Testing
August 1, 2016Authors: Logan McLeod and Santina Tatum Design of an ordnance-induced pyrotechnic shock test to meet a specific acceleration based Shock Response Spectrum (SRS) test requirement for a given test article has traditionally been an empirical process. Based on experience, the...
MIL-STD-810 Testing for Fitness Armband
July 19, 2016While the majority of NTS MIL-STD-810 testing is conducted on products for use in the defense sector, we often provide this testing for consumer product developers who want to demonstrate their products “ruggedness”. One recent example is Armpocket of Miami,...
International Approvals Update: Taiwan BSMI
July 14, 2016Recently, Taiwan BSMI has performed inspections in the market on products under BSMI DoC approval scheme. Aside from the BSMI mark with applicant’s code (“D number”) that appears on the product label, the inspectors want to ensure that the applicant’s...
Microbial Challenge Testing: Determine Fungicide Levels For Your Material Formulation
June 22, 2016The Microbial Challenge Test is commonly employed to determine the effectiveness of fungicides used in many products such as paints, plastics, wood, fabrics, footwear, finishes, etc… Once such test method comes from ISO 846 “Plastics – Evaluation of the action...
International Approvals Update – India BIS Amendment No. 2
June 13, 2016India BIS has established an Amendment No. 2 to IS 13252(Part1):2010 and the requirements are very similar to IEC 60950-1 A2. The current IS 13252(Part1):2010 (with amendment no. 1) is permitted until Dec 31st, 2016. For the existing registered models,...