Ehsan Toyserkani


Contact via University of Waterloo


Key Research Areas
Associated Researchers
Associated Organizations

Recent Research Projects

Tissue engineering an intervertebral disc replacement

2015/16-2020/21 • $938,422 • PI,CO
Degeneration of the intervertebral disc, a poorly understood disease, can result in pain and neurological symptoms. The disease is so common that approximately 1 in 50 Canadians become disabled by back pain. Currently, there is no optimal treatment for these individuals. Although the pain is...

Bioengineering a finger joint replacement

2018/19-2020/21 • $372,235 • PI,CO
Osteoarthritis (OA) is a disease of joints which are composed of soft tissue (cartilage) covering the ends of bones. It is the most common type of arthritis in Canada, and finger OA affects 10% of women and 7% of men. In the absence of disease modifying treatments, current therapeutic modalities...

Biological Finger Joint Replacement

2018/19-2020/21 • $309,915 • PI,CO,Other
Osteoarthritis (OA) is the most common type of arthritis in Canada, and finger OA affects at least 6.8% of individuals over the age of 26 years. In the absence of disease modifying treatments, current therapeutic modalities are aimed at reducing pain. These treatments alleviate symptoms but do...

NSERC Network for Holistic Innovation in Additive Manufacturing (HI-AM)

2017/18-2019/20 • $3,058,750 • PI,CO
Additive manufacturing (AM), also known as 3D printing, has been identified across sectors as the next generation technology that will fundamentally change manufacturing. AM is on the cusp of being widely adopted to replace many conventional manufacturing processes and enable the development of...

Multi-Scale Additive Manufacturing

2017/18-2019/20 • $500,000 • PI
No summary

Micro-Scale Additive Manufacturing of Strain Gauges on Non-planar Surface of Jet Engine Blades: Extended Objectives

2018/19-2019/20 • $307,692 • PI,CO
This project is an extension to a collaborative project between the University of Waterloo and GE Aviation in which the aim has been to deploy additive manufacturing (AM) to the fabrication of strain gauges on the non-planar surface of jet engine blades. Given the opportunities provided by...

Biological Finger Joint Replacement

2018/19-2019/20 • $299,503 • PI,CO
Osteoarthritis (OA) is the most common type of arthritis in Canada, and finger OA affects at*least 6.8% of individuals over the age of 26 years. In the absence of disease modifying*treatments, current therapeutic modalities are aimed at reducing pain. These treatments*alleviate symptoms but do...

Next Generation of Additive Manufacturing Technologies

2015/16-2019/20 • $145,000 • PI
Additive manufacturing (AM), (i.e., 3-dimensional (3D) printing), is an emerging technology slated to change the entire manufacturing enterprise by 2030. Based on Wohler Report (2013), AM activity has increased at a compound annual growth rate (CAGR) of 32.2% over the last three years. This high...

Optimization of Osteochondral-like Implants for Joint Repair

2019/20 • $124,704 • PI,CO
Osteoarthritis (OA), a disease of joints characterized by articular cartilage degradation, synovitis, and bonechanges, causes pain and impaired function and negatively impacts the acts of daily living. This disease occursbecause of trauma or underlying disease. Current treatment options are not...

Laser Powder Bed Additive Manufacturing Titanium 5553 Development

2019/20 • $76,923 • PI,CO
This project aims at the laser powder-bed fusion (LPBF) of Titanium-5553 for deploying to landing gear systems. LPBF is a class of additive manufacturing (AM) that has provided tremendous opportunities for various industries such as aerospace, tooling and automotive. Given the opportunities...

Process maps and models for binder jetting additive manufacturing of low cost alloys

2019/20 • $52,282 • PI,CO
Metal additive manufacturing (AM) has recently seen a significant growth in both use and capabilities, with an increased adoption in industrial and consumer markets. The prohibitive challenges in this space remain cost of technology adoption, as well as the reliable production of high quality...

Optimum design of fatigue-critical automotive components made of magnesium alloys

2014/15-2018/19 • $2,117,815 • PI,CO
In response to impending environmental regulation changes in fuel consumption and greenhouse gas emission, the global automotive sector has undergone revolutionary changes in the area of automotive structures through the widespread adoption of lightweight materials in the manufacture of...

Advancement in Additive Manufacturing using Magnetic Levitation Technology

2017/18 • $146,426 • PI,CO
Additive manufacturing (AM), also known as 3D printing, is a highly promising technology for rapid manufacturing that can fabricate parts without use of traditional tools. In this proposal, a proof-of-concept device will be developed to realize the additive manufacturing of ferromagnetic...

Micro-scale additive manufacturing of strain gauges on non-planar surface of jet engine blades

2015/16-2016/17 • $215,380 • PI,CO
This project aims at the additive manufacturing (AM) of strain gauges on the non-planar surface of jet engine blades. AM technologies have provided tremendous opportunities for various industries such as aerospace, tooling and printed electronics. AM is a class of disruptive technologies slated...

Additive manufacturing (3D printing) of full/partial dental bridges and abutment implants: a holistic approach

2015/16-2016/17 • $80,030 • PI,CO
This project aims at the deployment and characterization of an additive manufacturing (3D printing) process for the fabrication of customized dental titanium prostheses. Ever increasing needs for inexpensive and rapidly produced customized dental prostheses have prompted the development of novel...

market assessment of additive manufacturing (3D printing) of graphene-based devices

2016/17 • $15,000 • PI
3D printing, or additive manufacturing, relates to the process of creating or synthesizing a 3D object in a layer by layer fashion. The use of 3D printers has led to technology which allows objects of any shape or geometry to be produced from a 3D model. The researchers at the University of...

Novel electro-spark deposition (ESD) technology and applications

2014/15-2015/16 • $153,848 • PI,CO
Electro-spark deposition (ESD), a micro-welding process, is increasingly used to apply surface coatings for repair of damaged high value precision products or modify their surfaces for a abroad range of aerospace, defense, automobile, nuclear and medical applications. Huys Industries Limited, a...

Equipment for development of a novel and customized additive manufacturing (3D printing) workstation for producing heterogeneous soft tissues/implants, extracorporeal devices and prostheses

2015/16 • $148,599 • PI,CO
<p>This Research Tools and Instruments (RTI) proposal aims at establishing a novel and customized in-house additive manufacturing (AM) workstation. This critical workstation will allow us to fabricate anatomically-shaped soft tissues/implants, wearable devices and prostheses with heterogeneous...

Nano Spray Dryer for Aerosol-Assisted Assembly of Nanocomposite Powders

2015/16 • $121,904 • PI,CO
<p>The development of new and improved materials relies on engineering nanocomposites from the nano- to the macro-scale. Spray drying nanomaterial dispersions is a processing method capable of controlling nanostructure while producing micron-sized powders that can be shaped or formed into...

Modeling of melt pool dynamics during powder-bed laser metal additive manufacturing

2015/16 • $25,000 • PI
Additive manufacturing (AM) technologies have attracted many industries in the recent years due to their adaptability and versatility. AM is changing the school of thought in engineering design and manufacturing such that a new "manufacture for design" paradigm is forming to be replaced with the...

Smart tools: laser macro/micro fabrication strategies for embedding fiber optic sensors within heterogeneous metallic structures

2010/11-2014/15 • $160,000 • PI
Inspired by the fact that optics and photonics have been declared as key technologies for the 21st century by both the American Research Council and the European Union, the Engineering Directorate of the US National Science Foundation (NSF) has identified the integration of optical devices with...

Equipment for Development of a Novel Integrated Laser-Assisted Cold Deposition System

2013/14 • $149,972 • PI,CO
Cold spray (CS) is a promising coating technology at relatively low temperatures. The main differences between the CS and thermal spray processes are in powder velocity and inert gas temperature. The high impact of supersonic particles in the CS process generates local favorable compressive...

Systems and methodologies for additive manufacturing of porous functional structures with heterogeneous internal architecture

2013/14 • $123,800 • PI
Inspired by the fact that additive manufacturing (AM) has been declared as a key technology that will change the entire manufacturing enterprise by 2030, the US President's Council of Advisors on Science and Technology has identified the importance of AM systems and processes development in...

Repair of early joint damage - a tissue engineering approach

2010/11-2011/12 • $751,711 • PI,CO
Cartilage, the soft tissue that forms the gliding surfaces at the ends of the bones can be damaged by arthritis or secondarily to trauma. Cartilage can not repair itself. One million operative interventions were done on damaged knees alone and of these 244,000 were knee replacements. Currently...

Calcium Polyphosphate Bone Substitutes

2011/12 • $156,022 • PI,CO
There is a great need in orthopaedic surgery for bone substitutes to replace bone tissues lost during joint surgery, from trauma and from cancer. Many synthetic materials used are not strong enough for weight bearing and currently irradiated bone from tissue banks are commonly used. In this...

Innovations in coating/refurbishment/fabrication of cutting tools, dies, and high value machine components using automated laser cladding

2010/11-2011/12 • $63,930 • PI,CO
In automated laser cladding, a laser beam melts powder particles and a thin layer of the substrate to create a coating that is directly bonded to the substrate. Through a sensor system, the quality and geometry of the clad is measured in real time and using an intelligent controller, the laser...

Development of 3D/conformal interconnects using laser-assisted maskless microdeposition process

2010/11-2011/12 • $46,154 • PI
This project aims at the characterization of a laser-assisted direct write technology for realization of 3D/conformal interconnects. Ever increasing needs for inexpensive and rapidly produced thin films, coatings and 3D interconnects have prompted the development of novel direct fabrication...

Dual-parameter optical fiber sensor

2010/11 • $125,000 • PI
Inspired by the fact that optics and photonics have been declared as key technologies for the 21st century by both the American Research Council and the European Union, the Engineering Directorate of the US National Science Foundation (NSF) has identified the development of optical sensors for...

Patents

METHOD AND SYSTEM FOR OPTIMIZING PROCESS PARAMETERS IN AN ADDITIVE MANUFACTURING PROCESS

A method is provided for determining optimal values of significant process parameters in an additive manufacturing (AM) process for printing a part from a specified process material. The method involves defining a set of target output material properties to be optimized and identifying an initial set of process parameters pertaining to the AM process. The method broadly comprises a screening phase and an optimization phase. The screening phase involves generating and executing a first...
Related applications: WO2019US24909, EP20190745806

COMPUTER-IMPLEMENTED TOPOLOGY OPTIMIZATION MODEL FOR COMPONENTS UNDER DESIGN-DEPENDENT LOADS

A computer-implemented topology optimization method for constructing components (10) of high thermal and mechanical resistivity comprises the steps of: (i) defining a draft component design (CAD), a thermal boundary condition and a plurality of load requirements; (ii) conducting a thermal analysis, wherein a heat transfer is calculated within the thermal boundary condition to obtain a local temperature gradient distribution, wherein said distribution is used to compute thermal loads (T);...
Related applications: EP20200212401, WO2021EP78738

COMPUTER-IMPLEMENTED METHOD OF REDUCING SUPPORT STRUCTURES IN TOPOLOGY OPTIMIZED DESIGN FOR ADDITIVE MANUFACTURING

A Computer-implemented method of reducing support structures (11) in topology optimized design for additive manufacturing is presented. The method comprises, a), importing an optimized topology (T) of a component (11), b), identifying boundaries (B) of the topology, c), identifying of overhang feature(s) (O) in the topology, wherein any overhang feature encloses an angle (α) of 45° or less to the build plane, (d), adding support-free trusses (t) to the identified overhanging feature(s) in...
Related applications: EP20200214515, WO2021EP82643

THERMAL MODELLING APPROACH FOR POWDER BED FUSION ADDITIVE MANUFACTURING

A computer-implemented thermal modelling method for powder bed fusion additive manufacturing presented. The method comprises a microscale modelling (i) step, including a single- track simulation of a powder bed (6) with an energy beam (5), wherein a Gaussian heat source (G) and an anisotropic heat conductivity of a build-up material (6) are considered, and wherein heat source parameters are identified (I); and a macroscale modelling (ii) step, using a Gaussian effective heat flux to provide...
Related applications: EP20210154057, WO2021EP81911