Mikiyas “Micah” Haile

Mechanical Engineering Technology Student — Design & Analysis Major, SAIT

I specialize in SolidWorks 3D design, mechanical systems modeling, and materials testing. Certified CSWA (SolidWorks Associate) and WHMIS 2025. This portfolio showcases my engineering lab projects, CAD assemblies, and conceptual mechanisms developed through hands-on coursework and experimentation.

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Rail Track Manufacturing Systems — Industrial Analysis

MNFG-290 • SAIT • March 2025

Manufacturing Material Science Quality Control ISO 9001 / 14001

Collaborated with a 4-member team to research and document the complete manufacturing process of railway tracks — from raw material extraction to precision finishing and quality assurance under ISO 9001 / 14001 standards.

Mapped full production flow: Blast furnace → BOF → Continuous casting → Rolling → Quenching → Tempering.
Analyzed quality-control methods: ultrasonic, eddy-current, and dimensional inspection per Transport Canada standards.
Compared industrial operations of ArcelorMittal and Voestalpine AG in efficiency, technology, and environmental compliance.
Proposed safety and reliability improvements for Canadian railway track manufacturing.

Manufacturing Method

Flow-Shop System

High-volume, standardized production

QC Techniques

Ultrasonic / Eddy-Current

Non-destructive testing

Project context and outcomes

Team research project for MNFG-290. Compiled process flow diagrams, safety standards, and company benchmarking. Delivered a 20-page technical report detailing the metallurgical evolution of rail tracks, modern production technologies, and comparative analysis of leading manufacturers.

Team: Matteo Atlixco, Hannah Thomson, Ashten Nichols, Micah Haile | Instructor: MNFG-290 Faculty

Rotational Dynamics — Torque, Inertia & Angular Acceleration

Dyna 265 • SAIT • April 2025

Newton’s 2nd Law Torque & Inertia Sensor Data Error Analysis

Conducted an experimental validation of Newton’s Second Law for rotational motion using a PASCO rotational apparatus with photogate sensors. Calculated theoretical and experimental moments of inertia for a disk and a ring, correlating torque, angular acceleration, and frictional effects.

Theoretical formulas: I_disk = ½ mR², I_ring = ½ m(R₁² + R₂²)

Experimental relation: I_c = m_h((g / a) − 1) r²

Disk — % Error

7.5 %

Theory vs Experiment

Ring — % Error

4 %

High accuracy match

Measured Acceleration (disk)

0.0087 m/s²

Avg. linear accel.

Item	Theoretical I_c (kg·m²)	Experimental I_c (kg·m²)	Error (%)
Disk	0.00909	0.00846	7.5
Ring	0.00512	0.00537	4.1

Verified Newton’s 2nd Law for rotation by linking ΣM = Iα through measured sensor data.
Demonstrated relationship between torque, angular acceleration and moment of inertia.
Quantified effect of friction and alignment errors on rotational measurements.
Correlated experimental and theoretical models within < 8 % deviation.

Test setup and method

PASCO rotational apparatus with photogate/pulley system connected to data-acquisition software. Measured angular velocity and linear acceleration for a 50 g suspended mass. Derived moment of inertia experimentally from the relation I_c = m_h((g/a) − 1)r² and compared to theoretical values for disk and ring.

Author: Micah Haile | Instructor: Dave Carlgren | Southern Alberta Institute of Technology

Hardness Testing — Carbon Content and Cooling Rate Effects

EMTL 250 • SAIT • Jan 2025

Brinell Rockwell Heat Treatment Material Strength

Performed Brinell, Rockwell, and File hardness testing on carbon steels (AISI 1020, 1040) and aluminum alloy (6061-T6) to study the effects of carbon content, cooling rate, and heat treatment on hardness and ultimate tensile strength (UTS). Results were compared to tensile-test data and MatWeb references.

Carbon Increase (0.2 → 0.4%)

+57% Hardness

108 HB → 170 HB

Quench vs Anneal (AISI 1040)

+40% UTS

582 → 823 MPa

Error (Lab vs MatWeb)

≤ 5%

Excellent correlation

Increased carbon forms harder microstructures (pearlite, martensite), improving strength and abrasion resistance.
Quenching yields martensitic structure — very hard but brittle; annealing produces softer ferrite-pearlite.
Rockwell values lower on annealed steels due to surface decarburization; Brinell penetrates deeper and measures core hardness.
Al 6061-T6 (103 HB, 321 MPa) closely matched reference data (±3 %).

Sample	Condition	Brinell (HB)	UTS (MPa)
AISI 1020A	Annealed	108.6	398
AISI 1040A	Annealed	170.5	642
AISI 1040Q	Quenched	238.7	823
Al 6061-T6	Aged	103.3	321

Test setup and method

Used 10 mm tungsten-carbide ball at 1500 kg for Brinell and 1/16″ ball or diamond cone for Rockwell. Each indentation measured twice and averaged. Compared estimated UTS from hardness data to tensile-lab results and MatWeb references.

Team: Micah Haile, partner. Instructor: Mal Farrokhzad.

Charpy Impact Test — Material Toughness Evaluation

EMTL 250 • SAIT • Feb 6, 2025

ASTM E23 Ductile–Brittle Transition Failure Analysis Cold Climate Design

Impact testing of carbon steels (AISI 1020, 1040) and Al 6061-T6 across −60 °C to +50 °C to quantify absorbed energy, fracture mode, and transition behavior. Compared composition and heat treatment effects (annealed, normalized, quenched, cold-rolled).

T15

−25 °C

20 J transition

NDT (99% cleavage)

−54 °C

Nil-ductility

Average Toughness (AISI 1020A)

128 J

At ~+1 °C

1020N had the highest toughness at room temperature (300 J @ 21 °C) due to grain refinement.
1040Q was brittle (2 J @ 21 °C); quenching increased hardness and decreased toughness.
Al 6061-T6 showed ductile fracture appearance but lower absorbed energy than low-carbon steel.
For northern Alberta service, select steels with T15 < −45 °C (normalized low-carbon steels preferred).

Sample	Temp (°C)	Toughness (J)	% Shear	% Cleavage
AISI 1020A	21	250	90	10
AISI 1020N	21	300	95	5
AISI 1040A	21	36	70	30
AISI 1040Q	21	2	0	100
Al 6061-T6	21	18	70	30

Test setup and method

Temperature-controlled methyl alcohol bath, 5-minute soak. Samples mounted with notch opposite pendulum. Impact recorded within 5 seconds of removal. Data captured: absorbed energy (J) and fracture appearance (% shear vs % cleavage).

Team: Micah Haile Instructor: Mal Farrokhzad.

SolidWorks projects — assemblies and mechanisms