Vladimir Neykov P.Eng – Past Engineering Work

A. Research completed as part of my UBCO thesis:

1. Investigating weldability of AR200.

Research was done on abrasion resistant steel AR200. The steel was not well studied in terms of weldability and the effect of heat treatment on residual stress. The most substantial part of the research was to determine the effect of heat treatment on the residual stress after steel was welded. To accomplish this goal a neutron diffraction method was used. Five samples with different heat treatment duration were scanned with a neutron beam. The deformation of the crystal lattice was determined as well as the residual strain and residual stress. The experiment was carried out at the Canadian Neutron Beam Centre in Chalk River, Ontario. My job was to design the experiment, fabricate the samples, run the experiment at the neutron laboratory, and prepare the report with the experimental results. The results were presented to Brutus Truck bodies, Penticton, BC, since they were interested in using this type of steel.

Research completed as part of my UBCO thesis

2. Investigating fractured tensile samples with scanning electron microscope.

The same steel AR200 was used to make tensile samples. My job was to fabricate, test, observe, and write a report on the test results. Samples were cut in half and welded. Also, each sample was subjected to a different heat treatment duration. After a tensile test, stress/strain curves were plotted and analyzed. The most interesting part was investigation of the fractured ends with the scanning electron microscope (SEM). During the scanning, the chemical composition of intermetallic compound inclusions was analyzed. Conclusions about the failure were made. The results of the experiment were also presented to Brutus Truck bodies, Penticton, BC.

Investigating weldability of AR200

B. Some significant consulting projects:

1. Crane stability test procedure.

In 2009 Work Safe BC introduced new Every crane now had to be tested for stability. I was asked to write the crane stability test procedure. This procedure was developed in accordance with i) Work Safe BC regulation part 14.5, ii) Canadian national standards, and iii) American standards. The procedure was developed particularly for service trucks equipped with small mobile cranes.

If a mobile crane is overloaded it can lose stability and roll over causing injury. The test procedure determines the tipping momentum of the crane for 360° around it. After the test, a stability diagram is produced. This diagram gives valuable information to the crane operator to prevent tipping of the crane. The procedure was prepared for Brutus Truck bodies, Penticton, BC.

crane stability

2. Certification of mobile cranes.

Every new mobile crane must be certified for stability. My role in the certification process was to: check the documentation prior to the test; witness the stability test; perform a visual inspection for defects on the crane and the body of the truck after the test; take photos of the components being inspected; check the stability test diagram produced after the test; sign and seal the diagram and certificate of compliance. This certification process is for new cranes produced by Brutus Truck bodies, Penticton, BC.

Significant consulting projects

3. Diesel fuel tank test stand.

Truck diesel fuel tanks were tested for venting performance in the case of fire. They were filled with fuel and subjected to an open flame to test if the cap was secure enough and did not allow fuel or vapor to leak causing an explosion. I was asked to design a stand on which a fuel tank could be installed, and then rotated along the tank’s longitudinal axis to allow an open flame to come from all directions perpendicular to that axis. The project was prepared for Northside Industries, West Kelowna, BC. The project was possible with the support and cooperation of Neil Ladd who is operations manager at Northside Industries.

Certification of mobile cranes

4. Aircraft tail skid mount.

Small aircrafts tend to damage their tails at takeoff or landing, especially when the angle of attack is large. I was asked to perform a stress analysis on an existing tail mount and to make some improvements to it. Also I was asked to produce CAD drawings of the mount. The project was prepared for Skytek Aircraft Services, Vernon, BC.

Diesel fuel tank test stand

5. Barrel tipper.

A prototype of the existing barrel tipper was built by SkyTek Vernon, BC. My job was to take physical measurements, and produce CAD drawings, and perform a stress analysis on the worm gears and support structure of the barrel. I was requested to produce an assembly and shop drawings with all the tolerances, GDT, surface requirements, and specifications. The project was prepared for Skytek Aircraft Services, Vernon, BC.

Aircraft tail skid mount

6. Screw driver glove for holding screws.

The project was to design a variety of screw driver gloves for holding screws for different diameters of screw drivers. I was requested to produce shop drawings and 3D models for the CAD of the gloves. The screw driver gloves are patented by Skytek Aircraft Services, Vernon, BC.

Screw

7. Aircraft body protector from ice impact.

Two engine small aircrafts have a problem in the winter due to ice accumulation on the blades of the propeller. Centrifugal force causes ice to fly off the propeller blades and it sometimes hits the fuselage. A stainless steel shield was designed to protect the fuselage from ice impact. I was asked to modify the existing CAD drawing of the protector in use. The protector had to fulfill aviation regulations. Drawings were submitted to the Ministry of Transportation Canada for approval and Skytek Aircraft Services, Vernon, BC received permission to carry out repairs on damaged aircrafts.

Aircraft body protector from ice impact

8. Hand and foot railings.

I have done around 300 small contract projects for Gallery Brassworks Mississauga. I was asked to design a variety of wall railings, bar fixtures, book shelves, retractable belts, front desk metal fixtures, glass clips for glass panels, hand and foot railings for stairs, etc. Some of the projects were for: Pearson International Airport Mississauga, the St. Catharines courthouse, Jack Astor’s restaurant Toronto, Women’s College Hospital Toronto, Granite Golf Club Toronto, Bleckley County High School Georgia, Dollarama Square One Mississauga, and many others.

Aircraft body protector from ice impact

C. Some significant projects done as part of the work at the Department of Machine Design, Technical University, Sofia, Bulgaria:

1. Travel gear reducer with electric motor for overhead crane.

The design of the gear transmission was needed for moving the overhead crane along its tracks. There were specific requirements for power transmitted, non-standard shaft center distance, and specific capability. My job was to design the gear, select appropriate materials, perform stress analysis on shafts and gears, and select an appropriate clutch, electric motor, and bearings. Also, I was asked to produce assembly and shop drawings with all the tolerances, GDT, surface requirements, and specifications. The project was prepared for the crane factory in Sofia, Bulgaria.

2. Redesign of an existing gear reducer for ski lift.

The documentation for the gear transmission no longer existed. The gears were worn out and about to fail due to extensive wear and plastic deformation on the teeth. My job was to take physical measurements of the existing components: shafts, bearings, and gears, and reverse engineer the transmission. I also had to determine the profile correction of the teeth of the pinion and the gear. I was requested to produce shop drawings with all the tolerances, GDT, surface requirements, and specifications. The project was prepared for a manufacturing company in Sofia, Bulgaria.

3. Buildup welding machine for coal crushing rollers.

The machine was specifically designed to resolve a problem with the wear of the coal crushing rollers for a mining facility. It was a fully automated machine for buildup welding on spherical surfaces. In order to maintain a constant peripheral/welding speed, it was necessary for the spherical surface of the roller to rotate with a variable speed of rotation. I was in charge of the design of the support head that holds the welding nozzle and controls the motion of the nozzle towards the surface of the roller. I was also requested to produce the shop drawings with all the tolerances, GDT, surface requirements, and specifications. The project was prepared for “Maritca – Istok” plant city of Galabovo, Bulgaria.

4. Test stand for powder metallurgy journal bearing.

The stand was built as part of the research on new materials for powder metallurgy journal bearings. A variety of blended powder materials was prepared for bushings. The focus of the experiments was to determine wear resistance of the different materials. Also, the porosity of the bushings was examined as to their influence on the performance of the bearing unit. I was requested to produce assembly and shop drawings with all the tolerances, GDT, surface requirements, and specifications. The project was prepared for our department of Machine Design.

5. Elliptical sprocket.

I was asked to design and produce a drawing for an elliptical sprocket for an experimental series of bicycles. I had to develop a computer program where ellipse parameters were entered, and the sprocket contour coordinates were calculated and printed in X, Y format. These coordinates were used to cut the elliptical sprocket out of sheet metal using a laser cutting machine. The project was prepared for a bicycle shop in the city of Plovdiv, Bulgaria.

D. Some of the more significant projects done as designer in “PromProect” Sofia, Bulgaria.

1. Stair case reaching the door of a overhead crane.

A stair case was needed to reach to an overhead crane door. The design requirement was to be made out of welded angle profiles. The staircase design had to satisfy all the requirements of the Bulgarian Institute for Standardization (BDS).The stair case had to have no greater than a 75° inclination angle and also had to have a rest area halfway. I was asked to produce assembly and shop drawings with all the tolerances, GDT, surface requirements, and specifications. The project was prepared for a glass plant in the city of Pleven, Bulgaria.

2. Support column for warehouse structure.

There was a need for a column structure to carry the static buckling load of a building roof. It had to be designed in compliance with Bulgarian standard regulations. It also needed to accommodate some misalignment during the installation. I was asked to produce assembly and shop drawings with all the tolerances, GDT, surface requirements, and specifications. The project was prepared for a glass plant in the city of Pleven, Bulgaria.

3. Support platform for belt conveyor.

There was a need for a platform to support a belt conveyor and provide access to the conveyor for inspection and maintenance. The platform was designed and built out of welded “L” and “C” standard profiles. The platform had to be bolted to concrete blocks on the floor. I was asked to produce assembly and shop drawings with all the tolerances, GDT, surface requirements, and specifications. The project was prepared for a glass plant in the city of Pleven, Bulgaria.

4. Dust collector container.

There was a need for a container to collect dust from an overhead filter. The container was designed and built out of square-shaped structures made from welded metal plates. At the bottom of the container was an adjacent reversed pyramid shaped body i.e. the narrow end was at the bottom. The container was supported by four columns with crossbars. The columns were made by welded standard “L” and “C” profiles. The bottom of the container was attached to a discharging chute. I was asked to produce an assembly and shop drawings with all the tolerances, GDT, surface requirements, and specifications. The project was prepared for a glass plant in the city of Pleven, Bulgaria.

5. Support platform for filter.

There was a need for a platform to support filters to collect the dust from the glass production process. The support columns were made by welded standard “L” and “C” profiles. I was asked to produce an assembly and shop drawings with all the tolerances, GDT, surface requirements, and specifications. The project was prepared for a glass plant in the city of Pleven, Bulgaria.