Dr. Weheba, a Professor in the Department of Industrial and Manufacturing Engineering at Wichita State University. He received his Ph.D. in Industrial Engineering and Management Systems from the University of Central Florida. Since 1981 he has taught courses on industrial engineering and manufacturing-related subjects Dr. Weheba has performed research in the areas of quality management systems, statistical process control, additive manufacturing, product design optimization, and quality improvement. He is a fellow of ASQ and ASQ certified Quality Engineering, and a senior member of SME.
This paper presents proof of the concept that Portland cement can be used as a material on a comm... more This paper presents proof of the concept that Portland cement can be used as a material on a commercial binder jetting system. Sixteen cylindrical specimens were printed using different layer thicknesses and cured under different conditions. Both printing and curing followed a statistically designed experiment covering all possible combinations of the factors. The average values of the compressive strength and deviation from nominal height were used as response variables. Statistical analysis of the results supported the concept and suggested settings that would allow for maximum strength and minimum deviation from the nominal height. The concept appears to have several potential applications in restoration projects and the construction industry.
Restoring Historical Buildings Using Additive Manufacturing , 2024
This paper considers using additive manufacturing in restoration projects. This research proof th... more This paper considers using additive manufacturing in restoration projects. This research proof that Polyblend Calcium Carbonate (Grout) powder can be used as a building material on the ZPrinter 450 Binder Jetting 3D printer. Such material has promising applications in restoring historical structures. Using statistically designed experiments, this research investigated the effect of the layer thicknesses, binder saturation, curing solution, and curing time on 3D-printed tiles. The breaking strength, deviation from the nominal dimension, and surface roughness were measured as the key quality characteristics of printed tiles. The results were confirmed using additional runs. Research findings could be instrumental in offering unprecedented capabilities to preserve and revitalize historical structures and architectural treasures. These innovative research efforts will be extremely instrumental in the field of 3D printed customized tiles, façades restoration, and decorative calligraphy tiles.
Page 1. Session XXXX The Feasibility of Virtual Reality in the Classroom Lawrence E. Whitman, Don... more Page 1. Session XXXX The Feasibility of Virtual Reality in the Classroom Lawrence E. Whitman, Don E. Malzahn, Gamal Weheba, Bo Gatundu Industrial and Manufacturing Engineering Department Wichita State University Abstract ...
Journal of Management and Engineering Integration, 2022
The construction industry makes significant contributions to the national GDP. The rapid increase... more The construction industry makes significant contributions to the national GDP. The rapid increase in urban population resulted in increased demand for quality and productivity. Industry 4.0 offers an opportunity for the construction industry to grow sustainably. The term Industry 4.0 includes a range of technologies used to develop a digital value chain and enable automated manufacturing. The primary objective of this paper is to determine the status of industry 4.0 and its implementation in the construction industry. Using content analysis methods, this study analyzed 108 peer-reviewed articles published from January 2016 to December 2021, to reveal the most important key barriers to a successful implementation of Industry 4.0 technologies in the construction sector. The results shed light on some real challenges that can affect industry 4.0 applications and suggest directions for further research.
A statistical based analytical method was developed that can predict fatigue failure for metallic... more A statistical based analytical method was developed that can predict fatigue failure for metallic components of various geometric configurations subjected to constant amplitude loads. The method required the determination of the distribution of equivalent initial flaw size. The equivalent initial flaw size associated with an actual crack is influenced by the geometric configuration of the body, the applied loading condition and the crack growth model employed. In this study four factors and two types of crack configurations, and their influences on the equivalent initial flaw size distribution were investigated. The four factors are the stress concentration factor, tgK, the uncracked ligament length, nw, the maximum stress, max S, and mean stress, mean S. The two assumed initial crack configurations are the corner and surface flaw. Five specimen types were investigated: smooth unnotched, open-hole, 3t =K, 4t =K and 5t =K double-edge V-notched specimens, all of which have
While most instruction aims to provide students with content knowledge accompanied by practical a... more While most instruction aims to provide students with content knowledge accompanied by practical application, the classroom experience typically has difficulty providing students with non-trivial examples. Graduating students also express a lack of confidence in integrating knowledge gained in disparate courses regarding identifying problems and synthesizing solutions. Many programs include industry-based projects as a solution to these issues. This approach has various drawbacks, including the difficulty of implementing such a project in a sizable number of the courses, the need for a significant commitment of class time, establishing contacts and ensuring that students have sufficient access to them to develop a model. The Industrial and Manufacturing Engineering Department at Wichita State University is developing an integrated set of realistic virtual reality models of a manufacturing line at Boeing Wichita. This line and the virtual models will serve as a mega-case that will be ...
While most instruction aims to provide students with content knowledge accompanied by practical a... more While most instruction aims to provide students with content knowledge accompanied by practical application, the classroom experience typically has difficulty providing students with non-trivial examples. Graduating students also express a lack of confidence in integrating knowledge gained in disparate courses regarding identifying problems and synthesizing solutions. Many programs include industry-based projects as a solution to these issues. This approach has various drawbacks, including the difficulty of implementing such a project in a sizable number of the courses, the need for a significant commitment of class time, establishing contacts and ensuring that students have sufficient access to them to develop a model. The Industrial and Manufacturing Engineering Department at Wichita State University is developing an integrated set of realistic virtual reality models of a manufacturing line at Boeing Wichita. This line and the virtual models will serve as a mega-case that will be ...
E-learning has grown quickly and resulted in broad implementations. It has become an essential co... more E-learning has grown quickly and resulted in broad implementations. It has become an essential component of higher education as a non-traditional instructional method. Quality has always been and continues to be the primary issue in education. This study was aimed at identifying the perceptions of quality in e-learning from the standpoint of university administrators. These perceptions are likely to affect the way e-learning programs are designed and delivered. In achieving this objective, the study included 100 top-ranked e-learning programs in the U.S. Statements by administrators from these programs were analyzed for content. The analysis reviled that administrators’ perceptions are dominated by features and performance constructs. Factor analysis suggests that constructs reflecting engagement and trust are used to distinguish between different programs. Introduction The world is facing swift changes due to forward momentum in the technology of information and communication trans...
This paper presents proof of the concept that Portland cement can be used as a material on a comm... more This paper presents proof of the concept that Portland cement can be used as a material on a commercial binder jetting system. Sixteen cylindrical specimens were printed using different layer thicknesses and cured under different conditions. Both printing and curing followed a statistically designed experiment covering all possible combinations of the factors. The average values of the compressive strength and deviation from nominal height were used as response variables. Statistical analysis of the results supported the concept and suggested settings that would allow for maximum strength and minimum deviation from the nominal height. The concept appears to have several potential applications in restoration projects and the construction industry.
Restoring Historical Buildings Using Additive Manufacturing , 2024
This paper considers using additive manufacturing in restoration projects. This research proof th... more This paper considers using additive manufacturing in restoration projects. This research proof that Polyblend Calcium Carbonate (Grout) powder can be used as a building material on the ZPrinter 450 Binder Jetting 3D printer. Such material has promising applications in restoring historical structures. Using statistically designed experiments, this research investigated the effect of the layer thicknesses, binder saturation, curing solution, and curing time on 3D-printed tiles. The breaking strength, deviation from the nominal dimension, and surface roughness were measured as the key quality characteristics of printed tiles. The results were confirmed using additional runs. Research findings could be instrumental in offering unprecedented capabilities to preserve and revitalize historical structures and architectural treasures. These innovative research efforts will be extremely instrumental in the field of 3D printed customized tiles, façades restoration, and decorative calligraphy tiles.
Page 1. Session XXXX The Feasibility of Virtual Reality in the Classroom Lawrence E. Whitman, Don... more Page 1. Session XXXX The Feasibility of Virtual Reality in the Classroom Lawrence E. Whitman, Don E. Malzahn, Gamal Weheba, Bo Gatundu Industrial and Manufacturing Engineering Department Wichita State University Abstract ...
Journal of Management and Engineering Integration, 2022
The construction industry makes significant contributions to the national GDP. The rapid increase... more The construction industry makes significant contributions to the national GDP. The rapid increase in urban population resulted in increased demand for quality and productivity. Industry 4.0 offers an opportunity for the construction industry to grow sustainably. The term Industry 4.0 includes a range of technologies used to develop a digital value chain and enable automated manufacturing. The primary objective of this paper is to determine the status of industry 4.0 and its implementation in the construction industry. Using content analysis methods, this study analyzed 108 peer-reviewed articles published from January 2016 to December 2021, to reveal the most important key barriers to a successful implementation of Industry 4.0 technologies in the construction sector. The results shed light on some real challenges that can affect industry 4.0 applications and suggest directions for further research.
A statistical based analytical method was developed that can predict fatigue failure for metallic... more A statistical based analytical method was developed that can predict fatigue failure for metallic components of various geometric configurations subjected to constant amplitude loads. The method required the determination of the distribution of equivalent initial flaw size. The equivalent initial flaw size associated with an actual crack is influenced by the geometric configuration of the body, the applied loading condition and the crack growth model employed. In this study four factors and two types of crack configurations, and their influences on the equivalent initial flaw size distribution were investigated. The four factors are the stress concentration factor, tgK, the uncracked ligament length, nw, the maximum stress, max S, and mean stress, mean S. The two assumed initial crack configurations are the corner and surface flaw. Five specimen types were investigated: smooth unnotched, open-hole, 3t =K, 4t =K and 5t =K double-edge V-notched specimens, all of which have
While most instruction aims to provide students with content knowledge accompanied by practical a... more While most instruction aims to provide students with content knowledge accompanied by practical application, the classroom experience typically has difficulty providing students with non-trivial examples. Graduating students also express a lack of confidence in integrating knowledge gained in disparate courses regarding identifying problems and synthesizing solutions. Many programs include industry-based projects as a solution to these issues. This approach has various drawbacks, including the difficulty of implementing such a project in a sizable number of the courses, the need for a significant commitment of class time, establishing contacts and ensuring that students have sufficient access to them to develop a model. The Industrial and Manufacturing Engineering Department at Wichita State University is developing an integrated set of realistic virtual reality models of a manufacturing line at Boeing Wichita. This line and the virtual models will serve as a mega-case that will be ...
While most instruction aims to provide students with content knowledge accompanied by practical a... more While most instruction aims to provide students with content knowledge accompanied by practical application, the classroom experience typically has difficulty providing students with non-trivial examples. Graduating students also express a lack of confidence in integrating knowledge gained in disparate courses regarding identifying problems and synthesizing solutions. Many programs include industry-based projects as a solution to these issues. This approach has various drawbacks, including the difficulty of implementing such a project in a sizable number of the courses, the need for a significant commitment of class time, establishing contacts and ensuring that students have sufficient access to them to develop a model. The Industrial and Manufacturing Engineering Department at Wichita State University is developing an integrated set of realistic virtual reality models of a manufacturing line at Boeing Wichita. This line and the virtual models will serve as a mega-case that will be ...
E-learning has grown quickly and resulted in broad implementations. It has become an essential co... more E-learning has grown quickly and resulted in broad implementations. It has become an essential component of higher education as a non-traditional instructional method. Quality has always been and continues to be the primary issue in education. This study was aimed at identifying the perceptions of quality in e-learning from the standpoint of university administrators. These perceptions are likely to affect the way e-learning programs are designed and delivered. In achieving this objective, the study included 100 top-ranked e-learning programs in the U.S. Statements by administrators from these programs were analyzed for content. The analysis reviled that administrators’ perceptions are dominated by features and performance constructs. Factor analysis suggests that constructs reflecting engagement and trust are used to distinguish between different programs. Introduction The world is facing swift changes due to forward momentum in the technology of information and communication trans...
Uploads