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Product Safety Expert Witnesses: 2
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Failure Analysis Expert Thomas Read
Thomas Read, PhD
Principal
1435 Fulton Rd.
Santa Rosa CA
95403
USA
phone: 707-494-5089
Expert Background: Dr. Thomas L. Read is the Principal and CEO at A. Read Consulting, LLC. He received his PhD. from Stanford University in 1972 and has over 25 years of manufacturing experience in electronics, metallurgy, factory safety, failure analysis, glass fracture, glass failure and bottle failure. As a member of the electronics industry, he has earned process patents and has an extensive background in manufacturing techniques. In parallel, Dr. Read has spent over twenty five years as a consultant to attorneys and engineers. He has given more than 100 depositions and has appeared in court numerous times. Company Profile: Read Consulting, LLC is a full service laboratory providing services in the following areas:
- Failure Analysis; Factory Safety and Personal Injury (including machine guards and manufacturing safety)
- Glass Failure Analysis - Glass Fracture, Glass Failures and Bottle Failure
- Metal and Ceramic Failure
- Grinding Wheel Failures
- Intellectual Property and Patent Disputes
- Product Liability and Product Quality
- Manufacturing Disagreements (such as Intellectual Property, Failed equipment and Contract Disputes)
- Reverse Engineering
12/20/2023
· Failure Analysis
By: Dr. Thomas Read
California materials failure laboratory, Read Consulting Failure Analysis Laboratory was engaged to determine the cause of failure of a 12 oz soda bottle. This bottle was said to have exploded and caused injury to a person. The bottle was said to have spontaneously exploded as the was being pushed into a cooler filled with ice.
2/17/2023
· Failure Analysis
By: Dr. Thomas Read
When this type of valve is open a rubber seal around the valve stem prevents leaking. In this case, the poly acetate stem deteriorated due to the presence of hot chlorinated water This allowed water to leak out. Over time the leak rate increased.
10/24/2022
· Failure Analysis
By: Dr. Thomas Read
Read Consulting Failure Analysis Laboratory was engaged to determine the cause of failure of two titanium surgical screws used in corrective back surgery. These were both 6.5 mm diameter, 40mm long screws that were surgically implanted. in a patient, and they subsequently failed.
4/20/2022
· Failure Analysis
By: Dr. Thomas Read
The fatigue failure initiated on the outside bottom where the carafe had been scratched with the abrasive scrub pad. As a result of cyclical thermal shock (between 195°C and 15°C), the cracks grew progressively till it reached a critical length. Glass thickness at the origins is approximately 3 mm. One failed after 12.
4/12/2021
· Failure Analysis
By: Dr. Thomas Read
The annealed borosilicate glass pie plate failed as a result of “thermal shock”. There were multiple origins for the failure, and these all initiated at damage sites on the bottom of the Pyrex baking dish. It appears that the bottom of the pie plate was convex. Thus, setting the dish down and moving it on hard (abrasive) surfaces such as tile or granite counters created bottom “rim” damage.
9/6/2017
· Failure Analysis
By: Dr. Thomas Read
As "water hammer" (i.e. liquid impact) has the potential to cause glass bottle failure, Read Consulting LLC created two such failures to study the resulting fracture surface details.
4/23/2015
· Failure Analysis
By: Dr. Thomas Read
Read Consulting was asked to determine why a welded chair failed and caused injury to the person sitting in it.
2/3/2014
· Failure Analysis
By: Dr. Thomas Read
The root cause of the failure of customer returns of heated automobile rear view mirrors was investigated.
8/7/2012
· Failure Analysis
By: Dr. Thomas Read
During normal operation, the arm on an automatic wafer test station failed. Root cause failure analysis determined that the drive shaft on the right angle gear motor used to raise and lower the manipulator arm had failed first.
5/21/2012
· Failure Analysis
By: Dr. Thomas Read
This grinding wheel was part of a product liability and personnel injury case. It was claimed that the subject wheel had unexpectedly failed (i.e. flown apart) and an escaping piece had hit the plaintiff in the face causing serious injuries. According to the user, the grinder with the wheel was purchased approximately one hour before the grinding wheel failure.
3/29/2012
· Failure Analysis
By: Dr. Thomas Read
A failed plastic lawn chair was examined to determine the cause of failure. This chair failed on the premises of a restaurant In this study the subject chair is examined and compared to several exemplar purchased at the same time. The objective of this study is to determine the cause of failure.
11/8/2011
· Failure Analysis
By: Dr. Thomas Read
Glass Failure Analysis Expert Witness performs a failure analysis of a several tempered glass doors that had "spontaneously" failed at a construction site. The objective of this glass failure analysis is to determine the cause of failure and make recommendations to the contractor.
8/30/2011
· Failure Analysis
By: Dr. Thomas Read
Materials failure analysis expert performs a failure analysis to determine the source of a metal piece found in tomato product.
5/17/2011
· Failure Analysis
By: Dr. Thomas Read
A plumbing failure analysis was performed to determine why a cold water supply line to a bathroom sink had failed after only one year of service.
4/1/2011
· Failure Analysis
By: Dr. Thomas Read
A glass failure expert witness performs a root cause failure analysis on an exploding beer bottle. The object of this root cause failure analysis is to determine the cause of the bottle failure.
7/7/2009
· Design
By: Dr. Thomas Read
Before expending the effort necessary to reverse engineer a device or object, it must be definite that the object under study is not covered by one or more patents. This avoids a dispute over patent violations. Once it has been established that no patent coverage exists, one can use multiple techniques to reverse engineer a product. These are summarized below:
7/7/2009
· Failure Analysis
By: Dr. Thomas Read
The cracked tank was first inspected in the "as received" condition. In this condition it was cracked, but it was still whole. Next, the failed tank was separated by pulling it apart. This was done to expose the fracture surfaces of the main crack. This allowed for a complete failure analysis and for a determination of where the crack initiated.
7/7/2009
· Failure Analysis
By: Dr. Thomas Read
Glass fractography is the most effective method for determining why a glass object, such as a bottle, failed. This technique consists of examining the fracture surfaces of the failure for artifacts such as Wallner lines and using them to trace the crack back to its origin. Once the origin has been identified, it can be examined in detail with a microscope to determine the cause of the failure.
1/28/2006
· Failure Analysis
By: Dr. Thomas Read
Note: Glass Fractography is the most effective method for determining why a glass object, such as a bottle, failed. This technique consists of examining the fracture surfaces of the failure for artifacts such as Wallner lines and using them to trace the crack back to its origin
Forensic Safety Analyses Expert Kenneth Solomon
Dr. Kenneth A. Solomon
Chief Forensic Scientist, Technical Director
5324 Canoga Ave.
Woodland Hills CA
91364
USA
phone: 818-348-1133
fax: 818-348-4484
Areas of Expertise:
|
Auto • Airbag • Bicycle • Boating • Bus • Chair Design / Safety / Failure • Diving and Drowning • Electrocution and Shock • Elevator • Escalator • Fires and Explosions • Forklift • Gate • Golf Cart • Highway Design and Safety • Ladder • Law Enforcement • Lighting & Illumination • Loading Dock • Metallurgy • Motorcycle • Paintgun • Playground Safety • Press • Ramps • Rollercoaster • Safety Guards • Scaffolding • Seatbelts • Slip / Trip and Fall • Spas • Stairs • Swimming Pool Design and Safety • Tractors • Trailers • Trucks • 3D Scans
3/26/2014
· Warnings & Labels
By: Dr. Kenneth Solomon
In essence, to warn is to place someone on advance notice of a danger or a potential danger. To warn requires that the person or people giving the warning have a superior knowledge of the harm or potential harm compared to the person or people exposed. Further, the person or the people who are warning must also have a superior knowledge of the means of reducing either the likelihood and/or the magnitude of the harm or potential harm as compared with the person or people exposed.
2/13/2014
· Accident Prevention & Safety
By: Dr. Kenneth Solomon
Air bag control modules utilize complex algorithms to make air bag deployment decisions based on crash severity related to the change in vehicle speed or deceleration over time. Due to the proprietary nature of air bag deployment algorithms, the velocity, acceleration, or displacement thresholds for air bag deployment during a collision are not easily obtained; however, a range of frontal barrier impact speeds and corresponding deceleration and displacement threshold values for air bag deployment can be approximated using known vehicle stiffness-to-weight ratios.
6/28/2013
· Medical - Medicine
By: Dr. Kenneth Solomon
The purpose of this article is to show the relationship between the mechanism of an ankle injury (inversion, eversion, etc.) and the most likely result of the injury (sprain, fracture, etc.).
5/22/2006
· Injury
By: Kenneth Solomon, PhD, PE, et al
The purpose of this article is to distinguish the mechanism of knee injury (e.g., forward fall while foot is trapped, impact of knee on dashboard, chronic injury due to repetitive twisting, etc.) from the type of injury (e.g., torn meniscus, ruptured ACL, bursitis, etc
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