2017 BansilalRamnath Agarwal Charitable Trust s Vishwakarma Institute of Information Technology, Kondhwa (B.K), Pune 411048 A Report Of One-Day Workshop On NON-DESTRUCTIVE TESTING (NDT) 10.10.2017.-A Paradigm Shift In Retrofitting Industry A Report Of One Day Workshop On NON-DESTRUCTIVE TESTING (NDT) A Paradigm Shift in Retrofitting Industry Indian Concrete Institute Students Chapter Department of Civil Engineering, VIIT, Pune
Organized By Indian Concrete Institute (ICI) Students Chapter, VIIT, Pune Tuesday, 10th October, 2017 From 9.00 AM to 8.00 PM At Seminar Hall, E-building, Vishwakarma Institute of Information Technology, Kondhwa Pune- 411048 Mrs.A.G.Tanawade, ICI Co-ordinator,VIIT INTRODUCTION The Indian Concrete Institute (ICI) Students chapter, Civil Department, Vishwakarma Institute of Information Technology (VIIT), Pune successfully organized and held a One-Day workshop on NON-DESTRUCTIVE TESTING (NDT) on Tuesday 10 th of October,2017, starting at 9.00 AM to 7.00 PM with participation of total 80 students and 10 teaching staff. The workshop conducted in Seminar hall, E-building, Vishwakarma Institute of Information Technology (VIIT), kondhwa, pune on 10/10/17, was a part of the efforts to improve student s knowledge and employability skills in construction industry. The workshop was taken by Er. Ravi Ranade, Managing Director of Construction Diagnostic Centre.(CDC) Pvt.Ltd, a NDT expertise for structural and quality audit, also structural restoration consultants. Their office located at Erandawane, Pune.He is an expert in Non-destructive testing, backed up by excellently qualified labs and employees. He may strike as a man of Time, due to his strict punctuality. 2
BACKGROUND This is a post-event wrap up report on the One-Day workshop on NON- DESTRUCTIVE TESTING (NDT) on Tuesday 10th of October, 2017, organized by Indian Concrete Institute (ICI), Students Chapter, VIIT, Pune. The report consists of executive summary, specific details and other technical details which will give an insight of the workshop and live demo of equipment on site. WORKHOP AGENDA The agenda of this workshop was to develop and advance the employability skills of enthusiastic students and expose them to the retrofitting industry, trends and practices. WORKSHOP OBJECTIVE 1. To understand how to operate the NDT equipments, their working on site, 2. To spread awareness and expose students to retrofitting industry, 3. To develop and embed new skills in students 4. To be prepared to apply their knowledge of NDT in the industry METHODOLOGY 1) Presentation : Theory session will inform students and spark their interests, 2) Experience sharing : This will amaze the students by actual site scenarios, 3) Brainstorming : Clear the doubts and improve overall understanding, 4) Discussions : Deepen the understanding and explain the key concepts, 5) Site Demonstrations: Better understanding of procedure and handling of equipments. PARTICIPANTS: A total of 80 students and 10 staff members attended this. WELCOME ADDRESS The morning of workshop day was itself warm and exciting. The host, Ms.Sonali Sonker, a fellow student of TE-A, Civil welcome students and Speaker Er.RaviRanade. Felicitation to expert done by H.O.D of Civil department, S.G.Joshi. PROCEDDING DETAILS SESSION 1 :NDT : Introduction and why NDT. Non-Destructive Testing (NDT) is the process of doing inspections, testing, or evaluating materials, components or assemblies for defects without destroying the material or component or the use of non-invasive techniques to determine the integrity 3
of a material, component or structure. In other words, Inspect or measure without doing harm. NDT plays a vital role in assuring the safe operation of equipment and systems. Industries that utilize NDT: Airline and Aerospace Automotive and Railroad Construction Hydroelectric, Fossil, Nuclear Power Textile and Manufacturing Chemical and Petrochemical Logistics and Supply Medical and Pharmaceutical. Speaker Er. Ravi Ranade Uses of NDT: Flaw Detection and Evaluation - the size, shape, or orientation of a flaw (such as a crack or porosity) Leak Detection Location Determination Stress (Strain) and Dynamic Response Measurements Dimensional Measurements Material Sorting and Chemical Structure and Microstructure Characterization Composition Determination the thickness of a material or coating Estimation of Mechanical and Physical the hardness of a material Properties a material s electrical conductivity The size, shape, or orientation of a flaw (such as a crack or porosity), The thickness of a material or coating The hardness of a material The material composition (example, the carbon content in steel) material s electrical conductivity Test methods may be used to determine: Lime is more durable than cement. For ex. Old heritage monuments/wadasmade of lime, are still standing whereas buildings of cement cannot even reach 80 years in practice due to deterioration etc. There are no criterias for durability, no regulations. Sadly India has not made a IS code of their own till now and to be honest no-one 4
follows the IS Code on site practice and this reflects in the death rate during disasters. It is expected that by 2025, we will have cement free construction- Geo Polymer Concrete. Cube Strength Depends on: 1) Age 2) Size of mould-cube/cylinder 3) Shape of mould 4) Mould material and texture 5) Compaction 6) Curing technique 7) Moisture conditions at time of testing 8) Type of CTM Er.Ravi Ranade during lecture. 5
SESSION 2: Methods of NDT Based on principle, they are classified as follows: Group - A - Surface Hardness Methods Rebound Hammer Test Penetration Test Windsor Probe Group - B - Dynamic or Vibration Methods - Resonant Frequency Only Lab method - Ultrasonic Pulse Velocity - Acoustic Emission - Impact Echo - Transient Dynamic - Sonic / Pulse Echo, Impulse Response - Vibration Measurement Group - C - Magnetic Methods - Reinforcement Detectors & Cover meters Group D Electrical Methods - Dielectric Measurement ( Moisture Content ) - Electrical Resistivity Group - E - Electro- Magnetic Methods - Radar (Ground Penetrating Radar ) - Group F Radioactive / Infrared / Thermal Methods - X Radiography Group G - Penetrability Methods - Air / Gas / water permeability Test - Gamma Radiography Group H - Partially Destructive Tests - Penetration Resistance Test ( Windsor Probe ) - Pull - out test - Pull - off test - Break off test - Core cutting Group - I - Other properties of fresh / hardened concrete - Chemical tests - Cement Content &Agg / Cement ratio - Sulphate determination test - Chloride determination test - Alkalinity test - Carbonation test - Crack measurement & monitoring - Abrasion resistance test - Fresh concrete tests for W/C ratio and - compressive strength 6
Based on parameter, the methods can be classified as follows: FOR CONCRETE - Compressive strength Rebound Hammer - Windsor probe, - Ultrasonic Pulse Velocity, - Core - Capo, - Pull Out - Combined methods Flexural Strength- Break off Direct tensile strength- Pull off Concrete Quality - Ultrasonic Pulse Velocity, - Homogeneity Pulse echo, - Honeycombing, voids, Endoscopy, - Gamma Ray Radiography - GPR Damages - Fire / blast / Rebound Hammer - Earthquake Ultrasonic Pulse Velocity - Core Test - Acoustic Emission Cracks,Delamination - Ultrasonic Pulse Velocity-water tanks / Acoustic Crack Detector - pavements / bridges Infrared Thermography - Dye Penetration Test - X ray Radiography - Gamma Ray Radiography - Crack scope Pile Integrity - Pulse Echo - Ultrasonic Cross Hole - Logging - Thermal Integrity Profiling FOR STEEL Location, cover, size - Rebar locator, Bar size Corrosion Half - Cell Potential - Resistivity - Polarisation - Carbonation - Chloride Content Condition -Endoscope / Bore scope Integrity & Performance Tapping - Pulse echo - Acoustic emission - GPR - Load Test Utility Mapping - GPR 7
FELICITAION OF STUDENTS AND STAFF ATTENDEES-By Ravi Ranade. Felicitation of Prof.H.B.Dhonde by Joshi Sir Er.Ravi Ranade felicitating a student. Er.Ravi Ranade felicitating a student. SESSION 3: Details Of Methods Of NDT Number of Tests necessary for various test methods: Test method Nos. of Individual readings Recommended at a location Standard cores = 3 Rebound hammer = 12 Ultrasonic Pulse Velocity = 2 Windsor Probe = 3 Pull out = 4 Pull off = 6 Break off = 5 Medical Science V/s Concrete Science Orthopedic Doctor - Structural Engineer Pathologist - NDT Consultant Surgeon - Structural / Rehabilitation Consultant Medicines - Construction Chemicals Stethoscope - Rebound hammer Sonography - Ultrasonic Pulse Velocity Biopsy - Core cutting Plaster for fracture - Jacketing to member Then various case studies were presented which represented the vital role of NDT and its merits and how it helped in actual site situations. 8
SITE DEMONSTRATION: AT SUKH-SAGAR CONSTRCUTION SITE. ICI, Hon.Secretary- Er.Prasad Sevekari also joined us at site demonstration. The live demo of almost all the equipments such as Rebound hammer, UPV method, moisture meter etc and their handling was successfully carried on site. VOTE OF THANKS given by Mrs.A.G.Tanawade and Prof.H.B.Dhonde, on behalf Civil Department,VIIT, Pune. Site photos during workshop :-- Site Demo Of Radar Scanning of Slab Performing Ultra Sonic Pulse Velocity test Site Demo Of Rebar Locator ICI Chairman Er.UjwalKunte at Site Group Photo at Site with Er.Ranade and Er.Prasad Group Photo at VIIT with Speaker Ravi Ranade 9