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Comprehensive Overview of Acoustic-Induced Vibration (AiV) in process piping

By

Matt Jaouhari


Abstract

This presentation provides a comprehensive overview of acoustic-induced vibration (AIV) in process piping, focusing on high-frequency vibrations and their impact on system performance. The session will begin with a fundamental introduction to acoustic vibrations, followed by a historical perspective on their identification and challenges within industrial processes. The comparison between acoustic-induced vibrations (AIV) and flow-induced vibrations (FIV) will be explored, emphasizing the key differences between high-frequency and low-frequency vibrations, their causes, and their effects on piping systems.The discussion will then shift to the innovative development of Sweeplus, a first-of-its-kind, patented piping fitting designed to address the concerns of acoustic-induced vibrations. From conceptualization to large-scale production, the evolution of Sweeplus will be examined in detail. The presentation will also highlight the extensive simulations and testing processes conducted to ensure compliance with industry codes and standards, guaranteeing the safety and reliability of the fitting in process piping systems. A key feature of Sweeplus is its ability to improve the fatigue life of piping under high-frequency acoustic-induced vibrations, thus enhancing the durability and operational efficiency of critical piping systems. By the end of this presentation, attendees will gain a deeper understanding of acoustic and flow-induced vibrations, as well as the innovative solutions that are shaping the future of process piping design and safety.

Bio

Matt Jaouhari is a Bechtel Fellow, recognized for his outstanding contributions and expertise in process piping with 20+ years of experience. Previously, he served as the Chief Engineer of Plant Design and Piping at Bechtel Energy, a global leader in engineering, procurement, and construction, where he managed multi-billion-dollar projects. Now an Engineering Manager, Matt leads all aspects of engineering across projects, with a particular focus on complex piping systems for energy projects worldwide. With extensive experience in plant design, Matt has developed innovative solutions for challenges like acoustic-induced vibrations (AIV) in process piping and made changes to industry Codes and Standards on this topic. Notably, he helped invent a groundbreaking pipe fitting designed to mitigate AIV-related fatigue failure. Matt holds a professional engineering license from BC, is a certified Project Management Professional (PMP), and graduated from the University of Houston-Downtown with a degree in Process and Piping Design Engineering Technology.

In addition to his technical expertise, Matt actively contributes to the industry through his leadership roles. He is currently Vice-Chair of the American Society of Mechanical Engineers (ASME) Design Group and the incoming Chair. He is also a member of the Process Industry

Practice (PIP) Functional Piping Group and the Energy Institute. Matt holds two patents—Sweeplus and Adjustable Pipe Support—and has authored or co-authored 25+ technical papers thru various professional venues on topics such as Acoustic-Induced Vibration, compression collars, flow-induced vibration, and his Sweeplus innovation and book chapters.

Past Events

Use of Dimensional Analysis in Predicting Wildfire Spread

Abstract

In this presentation, Dr. Foust will discuss dimensional analysis, which is a tool utilized in fluid mechanics problems and how this method applies to the spread of wildfires; a dimensional analysis version of wildfire spread (Yang, 2017) will be presented from the literature. Further, an early model for wildfire spread (Fons, 1946) will also be presented and a simpler version of this model based on a particular tool from dimensional analysis known as the Buckingham Pi method. The utility of all three models will be discussed.

Bio

Dr. Henry Foust is an assistant professor in the Department of Computer Science and Engineering Technology where he teaches engineering science courses and conducts research in the area of solid/liquid and liquid/gas flows to include reactive flows such as combustion. Dr. Foust has been an academic for near 20 years.


Comprehensive Overview of Acoustic-Induced Vibration (AiV) in process piping

By Matt Jaouhari


Abstract

This presentation provides a comprehensive overview of acoustic-induced vibration (AIV) in process piping, focusing on high-frequency vibrations and their impact on system performance. The session will begin with a fundamental introduction to acoustic vibrations, followed by a historical perspective on their identification and challenges within industrial processes. The comparison between acoustic-induced vibrations (AIV) and flow-induced vibrations (FIV) will be explored, emphasizing the key differences between high-frequency and low-frequency vibrations, their causes, and their effects on piping systems.The discussion will then shift to the innovative development of Sweeplus, a first-of-its-kind, patented piping fitting designed to address the concerns of acoustic-induced vibrations. From conceptualization to large-scale production, the evolution of Sweeplus will be examined in detail. The presentation will also highlight the extensive simulations and testing processes conducted to ensure compliance with industry codes and standards, guaranteeing the safety and reliability of the fitting in process piping systems. A key feature of Sweeplus is its ability to improve the fatigue life of piping under high-frequency acoustic-induced vibrations, thus enhancing the durability and operational efficiency of critical piping systems. By the end of this presentation, attendees will gain a deeper understanding of acoustic and flow-induced vibrations, as well as the innovative solutions that are shaping the future of process piping design and safety.

Biography

Matt Jaouhari is a Bechtel Fellow, recognized for his outstanding contributions and expertise in process piping with 20+ years of experience. Previously, he served as the Chief Engineer of Plant Design and Piping at Bechtel Energy, a global leader in engineering, procurement, and construction, where he managed multi-billion-dollar projects. Now an Engineering Manager, Matt leads all aspects of engineering across projects, with a particular focus on complex piping systems for energy projects worldwide. With extensive experience in plant design, Matt has developed innovative solutions for challenges like acoustic-induced vibrations (AIV) in process piping and made changes to industry Codes and Standards on this topic. Notably, he helped invent a groundbreaking pipe fitting designed to mitigate AIV-related fatigue failure. Matt holds a professional engineering license from BC, is a certified Project Management Professional (PMP), and graduated from the University of Houston-Downtown with a degree in Process and Piping Design Engineering Technology.

In addition to his technical expertise, Matt actively contributes to the industry through his leadership roles. He is currently Vice-Chair of the American Society of Mechanical Engineers (ASME) Design Group and the incoming Chair. He is also a member of the Process Industry Practice (PIP) Functional Piping Group and the Energy Institute. Matt holds two patents—Sweeplus and Adjustable Pipe Support—and has authored or co-authored 25+ technical papers thru various professional venues on topics such as Acoustic-Induced Vibration, compression collars, flow-induced vibration, and his Sweeplus innovation and book chapters.

International Rescue Committee in Northern Lebanon - Ghayda Kassar

Abstract 

This presentation explores a small Mediterranean country's journey from ancient heritage to modern challenges. Drawing from direct experience with the International Rescue Committee (IRC), it examines how skill-building programs and micro-enterprise initiatives help refugees and local communities rebuild their lives. The discussion highlights grassroots economic empowerment and human resilience in the face of adversity.

BIO

Ghayda Kassar a senior Structural Analysis and Design student with a rich background in humanitarian work. Prior to pursuing higher education, I served as a liaison officer at the International Rescue Committee (IRC) and a microfinance organization, where I worked closely with refugee communities and underserved populations. Building on this meaningful experience, I successfully transitioned into academic pursuits, now approaching the completion of my degree

Cancer Genome Analyses

Chad J. Creighton, Ph.D., Department of Medicine, Baylor College of Medicine, Houston, TX

Abstract

Bioinformatics is an interdisciplinary field that utilizes computer science and statistics to analyze large-scale biomolecular datasets. These datasets can involve various “omics” platforms that profile the cell at different levels of molecular complexity, including RNA expression, protein expression, DNA methylation, somatic mutation, or DNA copy number. The vast amount of molecular profiling data from human tumor samples and bench experiments available in the public domain represents a tremendous resource. For any major cancer type defined by tissue of origin, molecular profiling data can identify molecular subtypes, predict patient outcome, identify markers of therapeutic response, determine the functional consequences of somatic mutation, and elucidate the biology of metastatic and advanced cancers. In addition, pan-cancer molecular studies can facilitate a better understanding of the molecular underpinnings and pathways of cancer beyond tissue-oriented domains, with therapeutic implications. This seminar will provide a broad overview of molecular profiling studies in cancer and the types of findings that can be made using these data.

Biography

Chad J. Creighton, PhD, is a full Professor in the Department of Medicine and the Dan L. Duncan Comprehensive Cancer Center at Baylor College of Medicine. He obtained his Ph.D. degree in Bioinformatics in 2006 from the University of Michigan in Ann Arbor. Then, he joined Baylor College of Medicine, receiving tenure in 2013. His research mainly focuses on bioinformatics analysis and integrating molecular profiling data representing various -omics levels, including protein expression, mRNA and microRNA expression, DNA methylation, somatic mutation, structural variation, and DNA copy number.

Models for Pressure Rise and Flame Speed for the Combustion of Aluminum in Closed, Spherical Vessels

Henry Foust, Ph.D., Department of Computer Science and Engineering Technology, University of Houston, Downtown

Abstract

In this presentation, models will be developed for pressure rise and flame speed associated with the combustion of aluminum particles in a 20-liter, closed spherical vessel. Typically, the pressure rise has been modeled assuming the combustion fuel is a gas and this results in an erroneous pressure rise curve; this work will provide a model that fits the experimental data well. The pressure rise model comes from an understanding of the kinetics and these same kinetics form the basis to the flame speed model, which is validated against experimental results. The presentation will go on to explore the effects of particle shape on the time to maximum pressure (TMP) and how TMP affects global combustion properties such as flame speed, K(st), and (dP/dt)max.