Holly Ault

Holly Ault
Worcester Polytechnic Institute | WPI · Department of Mechanical Engineering

About

27
Publications
8,712
Reads
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226
Citations
Citations since 2017
1 Research Item
72 Citations
2017201820192020202120222023051015
2017201820192020202120222023051015
2017201820192020202120222023051015
2017201820192020202120222023051015

Publications

Publications (27)
Article
There is an increasing trend in solid modeling instruction to include not only procedural knowledge but also strategic knowledge when teaching students how to build solid models. In order to evaluate the many choices made by students as well as experts in their modeling procedures, and to compare different types of solid models used in these studie...
Article
A comparison between automated and manual grading of selected part files using the PTC Precison LMS system is presented. A pilot study was conducted to create an automatically graded assessment for a single part file with moderate complexity. Part files created by students in an intermediate level solid modeling course were graded manually and with...
Article
The use of a web based Learning Management System (LMS), teamed with Pro/FICIENCY, a PTC technology designed to automate the assessment of student assemblies, parts and drawings were given to students in an attempt to make more faculty and student time available to focus on strategic knowledge and conceptual understanding that may be more relevant...
Article
It is uncommon for CAD courses to delve into the underlying mathematics behind CAD models, however, a basic understanding of the functions performed by the CAD system are necessary for designers to utilize the software effectively. This paper will discuss several projects completed in a course on geometric modeling for senior/graduate level student...
Article
Full-text available
Visualization skills are believed to be a strong indicator of success in engineering, science, and a variety of other careers. Previous studies have compared the visualization skills of first year engineering students in the US with their cohorts in Europe and Brazil, but to date there have been no data reported for developing countries in Africa....
Article
Full-text available
The objective of this paper is to present applications of solid modeling aimed at modeling of complex geometries such as splines and blended surfaces in advanced CAD courses. These projects, in CAD-based Mechanical Engineering courses, are focused on the use of the CAD system to solve design problems for applications in machine design, namely the g...
Article
In recent years, rapid prototyping (RP) equipment has become widely available. The decreasing costs as well as the ease of operation of these machines make them well suited to the university environment. The most commonly used machines in academia include fused deposition modelers and powder-based 3D printers. In spite of the fairly modest cost of...
Conference Paper
This paper describes the integration of design projects to aid persons with disabilities in the mechanical engineering program at WPI. Students ranging from first year through graduate level design and build a wide range of devices as aids to daily living, to improve mobility, or for use in recreational activities. Ongoing relationships with local...
Article
Parametric solid models provide a quick way of constructing parts that can be easily modified and redesigned for reuse in a variety of downstream applications. However, the method used to create the model has a significant impact on the level of usability. This research uses a combination of interviews, company standards evaluation, and model analy...
Conference Paper
Several challenging issues must be addressed when developing class projects for introductory and intermediate design classes. The students have limited technical backgrounds. Large course enrollments conflict with the desire to have students work in small teams. Developing design course projects based upon devices to aid persons with disabilities c...
Conference Paper
The objective of this research was to maximize not only accessibility but also user comprehension of web pages, particularly those containing tabular and graphical information. Based on literature and interviews with blind and low vision students and their teachers, the research team developed guidelines for web developers to describe charts and gr...
Article
Full-text available
With the use of geometric constraints, parametric and variational solid modeling systems enable designers to incorporate relationships between geo-metric entities into the geometric model and thereby control potential changes in geometry. The objective of developing these constraints or relations is to capture the intent of the designer and restric...
Article
Since 1988 the National Science Foundation has funded the Bioengineering Research to Aid the Disabled (BRAD) program. This program supports university engineering design programs in which the students design and fabricate devices or systems to assist people with disabilities. Universities typically establish an association with a number of rehabili...
Article
A fourbar linkage test-bed has been designed, built, and instrumented to measure the effects of dynamic balancing, vibration isolation and system stiffness on the dynamic forces and torques generated at the pivot bearings and on the ground plane. The system was initially designed and modelled using the Aries solids modelling package, the ADAMS dyna...
Article
A micromechanical model has been developed to study and predict the mechanical behavior of fibrous soft tissues. The model uses the theorems of least work and minimum potential energy to predict upper and lower bounds on material behavior based on the structure and properties of tissue components. The basic model consists of a composite of crimped...
Article
A micromechanical model of fibrous soft tissue has been developed which predicts upper and lower bounds on mechanical properties based on the structure and properties of tissue components by Ault and Hoffman [3, 4]. In this paper, two types of biological tissue are modeled and the results compared to experimental test data. The highly organized str...
Conference Paper
A micromechanical model of fibrous soft tissues has been developed which predicts upper and lower bounds on mechanical properties based on the structure and properties of tissue components. The model is useful in understanding the mechanical behaviour and interactions between soft-tissue constituents. For the highly organized structure of rat tail...
Conference Paper
A method has been developed to determine local fiber orientations from scanning electron microscope images of connective tissues. The digitized image is convolved with gradient operators to locate edges and determine their direction. The local directions of the fibers are found and collected into a histogram representing a fiber-orientation distrib...
Article
The location of atoms and orientation of planes in simple crystal structures are often difficult for students to visualize. An interactive microcomputer program has been written to draw the unit cell of a chosen crystal structure in any desired orientation, show specific selected Miller planes, and display the atoms which lie only in the selected p...
Article
Full-text available
WPI was one of four colleges and universities awarded NASA grants for student design and development of an improved glove for space suits. This paper traces the design, development and testing of the WPI prototype glove. Test results showed that the glove did not significantly limit hand and finger motion when pressurized at 8 psi, except in the sp...

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