Bart Kemper

Bart Kemper
Kemper Engineering Services, LLC · Engineering

Bachelor of Science, Mechanical Engineering
Continuing in-house work on "design by analysis" for glassy polymers as well as V&V techniques in simulation

About

51
Publications
15,022
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77
Citations
Introduction
Fellow, Am. Society of Mech. Engineers (F.ASME), Lt. Col., US Army (Ret), Professional Eng. (US & Int), Chartered Eng. (AUS), Board Certified Forensic Engineer (US) Consulting mechanical engineer and military engineer with field applications of engineering simulations and numerical modeling. Current areas of interest include design and analysis of glassy polymers; forensic engineering; blast and explosives; pressure vessel technology; subsea technology. https://orcid.org/0000-0003-4195-6263
Education
August 1990 - May 1992
Louisiana State University
Field of study
  • Mechanical Engineering

Publications

Publications (51)
Presentation
Full-text available
After attending this presentation, attendees will understand key principles in using engineering simulations in support of forensic investigations, the legal pitfalls of simulation exclusion based on “simulations as a separate witness,” and how Verification & Validation (V&V) embodies best practices to connect the user’s skills to the simulation to...
Presentation
Full-text available
The existing ASME code procedures for glassy polymers are in ASME Safety Standard for Pressure Vessels for Human Occupancy (PVHO-1). The current service spans hostile conditions in the North Sea to controlled medical environments. The system is locked into specific shapes and cannot be adjusted to account for yield strength, ultimate strength, and...
Conference Paper
Full-text available
The existing code procedures for glassy polymers are in ASME Safety Standard for Pressure Vessels for Human Occupancy (PVHO-1). The current service spans hostile conditions in the North Sea to controlled medical environments. These procedures are based on an empirical method and do not use material properties. The system is locked into specific sha...
Conference Paper
Full-text available
Section VIII of the Boiler and Pressure Vessel Code is introducing the use of acrylics as a pressure vessel material. The design method is specified in ASME PVHO-1, Safety Standard for Pressure Vessels for Human Occupancy. The current method relies upon an empirical method developed in the 1960–70’s. It does not use “allowable stress” or other mech...
Conference Paper
Full-text available
The current method for designing acrylic pressure vessel components relies upon an empirical method developed through experimentation during the 1960's and 70's. The method is detailed in ASME PVHO-1, Safety Standard for Pressure Vessels for Human Occupancy. One of the factors restricting the design methodology to experimental correlation was the s...
Article
Full-text available
A commercial diver using surface-supplied air was ''jetting" a trench, which was using high-pressure water via an industrial ''jetting hose" connected to a pressure-compensated tool to cut trenches in silty sea bottoms. The tool used high-pressure water pumped from the tender boat down to the diver. It was reported that man-made objects in the area...
Conference Paper
Full-text available
A horse was undergoing hyperbaric therapy to accelerate healing. It had been in the chamber before without incident. The horse was shod with steel shoes and had been rubbed down with a liniment (added fuel). The horse became upset and started kicking. It knocked over an equipment item and exposed uncoated metal. Sparks started a fire, and after a s...
Article
Full-text available
Engineering codes are a key method to guide designs to safe and reliable outcomes. Many such codes have prescribed calculations where the user provides specific inputs in a series of calculations, often using charts or tables, to get specific outputs. The design margins, units, and underlying theory are not always apparent. Engineering codes may no...
Poster
Full-text available
Debarkation Syndrome, or more properly Mal de Debarquement Syndrome (MdDS), is a neurological disorder that most commonly develops following an ocean cruise or other type of water travel. It is also known as “Land Sickness” or “Drunken Sailor Syndrome” when applied to professional sailors. The symptoms include continuous feeling of swaying, rocking...
Poster
Full-text available
Current design methods for glassy polymers used in pressure vessels is a limited empirical method. A Design By Analysis (DBA) method would allow innovation in materials, shapes, and applications.
Article
Full-text available
The ASME Pressure Vessels for Human Occupancy codes and standards are engineering standards developed to provide a reliable design method for pressure vessel windows. This empirical method is based primarily on years of government-sponsored testing and development and does not directly use engineering theory. This empirical algorithm makes it chall...
Presentation
Full-text available
This outlines the proposed methodology for engineering structural designs using glassy polymers such as acrylics and polycarbonates. The initial application will be for Pressure Vessels for Human Occupancy, such as decompression chambers and diving chambers. It is likely to go beyond PVHOs due to the lack of detailed engineering codes for plastic d...
Presentation
Full-text available
Very large acrylic spheres are used as both a "hull" and a "window" in many submersibles. According to ASME PVHO-1, "Joining of acrylic castings by bonding is permitted provided … (the) joint shall be subjected only to membrane compressive stresses." While the concept is correct in abstract, in practice the code-allowable variation in material prop...
Presentation
Full-text available
Initial work in developing windows, face ports, lenses and other transparent structures using glassy polymers was often through empirical methods or conservative design tables. Current minimum standards in ASME PVHO do not require ductility, the key characteristic driving material selection compared to brittle but stronger materials. Performance-or...
Conference Paper
Full-text available
Initial work in developing windows, face ports, lenses and other transparent structures using glassy polymers was often through empirical methods or conservative design tables. Current minimum standards in ASME PVHO do not require ductility, the key characteristic driving material selection compared to brittle but stronger materials. Performance-or...
Conference Paper
Full-text available
Very large acrylic spheres are used as both a "hull" and a "window" in many submersibles. According to ASME PVHO-1, "Joining of acrylic castings by bonding is permitted provided … (the) joint shall be subjected only to membrane compressive stresses." While the concept is correct in abstract, in practice the code-allowable variation in material prop...
Conference Paper
Full-text available
Security engineering is similar to other forms of engineering-the design is guided by the loads, materials, and desired function. For facility design, the load is the threat. Facilities that are designed with considerations for explosive hazards are designed with a shot, or series of shots, of a given size and distance from key locations. These fac...
Presentation
Full-text available
Polymers are thermal insulators compared to steels and other metals. They not only transfer heat at slower rates, they retain heat more. Polymer mechanical properties are also more sensitive to temperatures than steels and other metals. Glassy polymers such as acrylics and polycarbonates are used for viewports in remotely-and human-operated submers...
Conference Paper
Full-text available
Polymers are thermal insulators compared to steels and other metals. They not only transfer heat at slower rates, they retain heat more. Polymer mechanical properties are also more sensitive to temperatures than steels and other metals. Glassy polymers such as acrylics and polycarbonates are used for viewports in remotely-and human-operated submers...
Article
Full-text available
Explosives can be a devastating weapon against facilities. If facilities are designed to mitigate an explosive-based weapon, it's for a specific weapon size and location. Hostile groups will adapt to defeat a target. Blast modeling can be used to examine what a facility can withstand and how to mitigate new threats.
Presentation
Full-text available
As diving vessels go deeper, the original assumptions in viewport designs are being challenged. This examines the difference between the recommended 90 degree windows for deep (10,000 psi or more) water applications vs. 60 degree windows. The consequence of inappropriate design selection can be catastrophic.
Patent
Full-text available
In some embodiments, an implant delivery device can include a housing defining a housing passageway. A distal end of the housing can flexibly couple to a head that can define a head passageway. Collectively, the housing pas sageway and the head passageway can define an insertion passageway such that, at least a portion of the insertion passageway i...
Technical Report
Full-text available
Pressure injuries affect over 2.5 million people in the United States and over 7.4 million people worldwide. In the US they plague 20% of paraplegics and 26% of quadriplegics and create a wound care cost estimated around $11 billion per year. Our team has developed a novel approach that can alleviate the suffering of millions, reducing injury forma...
Presentation
Full-text available
Current use of ASME pressure vessel code limits the use of glassy polymers (PMMA and polycarbonate) to empirical formulae. The PDF is a reduced version of the powerpoint due to the builds not translating to a fixed format. This explores how well implicit nonlinear Finite Element Analysis predicts failures documented in physical testing.
Data
Full-text available
Patent
A beverage carriage if provided for wear around a user's waist area. The apparatus includes an accessory that attaches to a user's waist area. A hanger depends from the accessory, the hanger having an upwardly positioned socket. A mounted sleeve has a top opening having an opening that enables a contained beverage to be housed within the sleeve int...
Conference Paper
Full-text available
The Code of Federal Regulations specifically adopts the ASME Boiler and Pressure Vessel Code as the standards for diving systems in US waters. Not all hyperbaric systems are made to ASME standards. This paper presents methods used successfully to obtain US Coast Guard and other jurisdictional approval of non-ASME pressure vessels for human occupanc...
Presentation
Full-text available
Acrylics (Poly Methyl Metha-lcrylate, or PMMA) are a proven, reliable material for Pressure Vessel for Human Occupancy (PVHO) windows. The current codes and standards reflect a first-generation development of defining a nonmetallic for pressure vessel application. Subsequent investigations in material science as well as decades of operational exper...
Conference Paper
Full-text available
Acrylics (Poly Methyl Methalcrylate, or PMMA) are a proven, reliable material for Pressure Vessel for Human Occupancy (PVHO) windows. The current codes and standards reflect a first-generation development of defining a nonmetallic for pressure vessel application. Subsequent investigations in material science as well as decades of operational experi...
Book
Safety standard for the design of pressure vessels for human occupancy (PVHO). This includes medical hyperbaric chambers, saturation diving applications, tunneling "dry diving" techniques, and submersibles. Bart Kemper is a member of the main committee as well as the technical subcommittees. This is a committee-authored publication. The authors lis...
Conference Paper
Full-text available
Acrylics (Poly Methyl Metha-lcrylate, or PMMA)are a proven, reliable material for submersible viewports. The current codes and standards reflect a first-generation development of defining a nonmetallic for pressure vessel application. This is part of an effort to potentially expand the design parameters in viewports and application of acrylics This...
Conference Paper
Full-text available
The Code of Federal Regulations specifically adopts the ASME Boiler and Pressure Vessel Code as the standards for diving systems in US waters. Not all diving systems are made to ASME standards. This paper presents methods used successfully to obtain US Coast Guard approval of non- ASME pressure vessels for human occupancy.
Article
Full-text available
Acrylics (Poly Methyl Methalcrylate, or PMMA)are a proven, reliable material for submersible view ports. The current codes and standards reflect a first-generation development of defining a nonmetallic for pressure vessel application. This is part of an effort to potentially expand the design parameters in view ports and application of acrylics Thi...
Article
Full-text available
Traditionally, chemical attacks are seen as military bombs or home-brewed releases. Some of the original chemical attacks in WWI used industrial gasses such as phosgene. Similarly, industrial sites can be used to create a chemical attack, which is since September 2001. However, the potentially more pernicious attacks could use naturally occurring p...
Technical Report
This document provides guidance with development, review and approval of regulatory submissions involving hyperbaric chambers and reviews the principles of safety and performance of Pressure Vessels for Human Occupancy (PVHO) intended for use as medical devices. This is a committee document with an incomplete list of authors. All members of the ASM...
Technical Report
Full-text available
This compares the the literature values for using the specified oleophilic film for oil capture to field tests and computer simulations.
Article
Full-text available
The engineering challenges in developing nations can be significant. This is far more the case in a non-permissive environment. The reliability of infrastructure systems can be compromised not only by direct effects of conflict, but the turnover in personnel and lack of documentation. Risk mitigation, particularly in security matters, can easily bu...
Article
Full-text available
Army Reserve engineers provide valuable skills in combat zones. The Construction Management Section formed in 2006 shows how a multi-disciplinary team goes where civilian and contract engineers cannot to rebuild infrastructure as well as assist in combat operations.
Article
Full-text available
Mass casualty attacks in recent years have demonstrated the need to include "evil intent" as a design consideration. Three recent actual or potential weapons of mass destruction (WMD) attacks did not involve nuclear bombs or other devices designed as weapons, but rather benign objects used with evil intent. Just as unplanned events such as hurrican...
Article
Full-text available
Transportation and traffic managers have had to deal with increased liability issues regarding containing vehicles during impact with protective barriers. Today’s security environment has a heightened need for means of stopping vehicles in controlled manner for security and liability purposes. Using strain energy absorption via annealed steel cable...

Questions

Questions (14)
Question
Only a fraction of my citations in a given paper are recognized by RG. I cannot determine what drives the recognition. Having a DOI doesn't seem to change recognition. What can you do to have your citations properly processed and incorporated into your references for a paper?
Question
I have seen my RG rating go down while still maintaining the same types of engagement. I'm not trying to maximize my RG score, but I am trying to understand what is it supposed to measure. Looking at the components they say are used, it is not apparent why a score would go down.

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Projects

Projects (9)
Project
In 2006 we were granted a patent in Ireland regarding recycling municipal solid waste (MSW) and developing a biomass stream for energy generation. While that project was impacted by legal actions, KES has continued to work in the field. We are now in a position to share our interest in this vital field.
Project
As a member of the ASME RAMPCAP (Risk Assessment and Mitigation for Critical Asset Protection) committee as well as a military engineer, the post-construction vulnerabilities of infrastructure is often neglected. It can be acts of sabotage or military action, such as "dam busting" in WW2, or neglect or negligence, such as Flint Michigan's water supply. Oil spills are a specific type of vulnerability, but there are others to consider.