Here are the key steps to solve this example:
(a) Standard time = Normal time * (1 + PFD allowance factor)
= 3.23 min * (1 + 0.15) = 3.23 * 1.15 = 3.72 min
(b) Irregular element time per cycle = Normal time / Frequency
= 1.25 min / 5 cycles = 0.25 min
(c) Standard time including irregular element
= Regular cycle time + Irregular element time per cycle
= 3.72 min + 0.25 min = 3.97 min
(d) In an 8-hr shift at standard time:
Units produced = (Shift time / Standard time)
Work study & Method Engineering is one of important Subject in engineering that is core of Lean.these Slides Would be helpful in understanding of WSME. Group technology is major one
Work study & Method Engineering is one of important Subject in engineering that is core of Lean.these Slides Would be helpful in understanding of WSME. Group technology is major one
Kế toán thành phẩm , tiêu thụ và xác định kết quả kinh doanh tại doanh nghiệp tư nhân xuân dũng. Giá vốn hàng bán là giá thực tế xuất kho của sản phẩm( gồm cả chi phí mua hàng hóa đã bán ra trong kỳ đối với doanh nghiệp thương mại) hoặc giá thành thực tế và được xác định kết quả kinh doanh trong kỳ.
Production Planning Control, Demand Forecasting, Aggregate Production Planning, Strategies of Aggregate Planning . Scheduling
Workforce Planning
Materials Requirement Planning
Capacity Planning
Production Control using JIT
Shop-Floor Control
Production planning and control refers to two strategies that work cohesively throughout the manufacturing process. Production planning involves what to produce, when to produce it, how much to produce, and more. A long-term view of production planning is necessary to fully optimize the production flow.
Production control uses different control techniques to reach optimum performance from the production system to achieve throughput targets.
Click below to ENROLL in the course OR Copy paste the URL below.
https://www.udemy.com/course/production-ppc
Kế toán thành phẩm , tiêu thụ và xác định kết quả kinh doanh tại doanh nghiệp tư nhân xuân dũng. Giá vốn hàng bán là giá thực tế xuất kho của sản phẩm( gồm cả chi phí mua hàng hóa đã bán ra trong kỳ đối với doanh nghiệp thương mại) hoặc giá thành thực tế và được xác định kết quả kinh doanh trong kỳ.
Production Planning Control, Demand Forecasting, Aggregate Production Planning, Strategies of Aggregate Planning . Scheduling
Workforce Planning
Materials Requirement Planning
Capacity Planning
Production Control using JIT
Shop-Floor Control
Production planning and control refers to two strategies that work cohesively throughout the manufacturing process. Production planning involves what to produce, when to produce it, how much to produce, and more. A long-term view of production planning is necessary to fully optimize the production flow.
Production control uses different control techniques to reach optimum performance from the production system to achieve throughput targets.
Click below to ENROLL in the course OR Copy paste the URL below.
https://www.udemy.com/course/production-ppc
What is cycle time in the manufacturing processMRPeasy
Cycle time is often confused with throughput time and takt time, but it is nevertheless a separate manufacturing performance indicator used to measure the duration of specific production processes and to get vital insight into your production efficiency.
Read more from here.
#throughputtime #cycletime #keyperformanceindicators #productionefficiency #mrpeasy #manufacturing #manufacturingsoftware #mrpsystem #erpsystem #manufacturingprocess
Hope this presentation on Assembly Line Production - Introduction will be useful to Fresh Mechanical Engineers who look forward to kick start their career,Refresher for Experienced Mechanical Engineers and gives Exposure to Mechanical Engineering Students.The presentation starts with Assembly Line Production and gradually moves towards common practices in the Industry.Thanks and Keep Learning.
Work measurement: Job design determines the content of a job, and method analysis determines how a job is to be performed. Work measurement is concerned with determining the length of time it should take to complete the job. Job times are vital inputs for workplace planning, estimating labor costs, scheduling, budgeting and designing incentive systems.
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
HEAP SORT ILLUSTRATED WITH HEAPIFY, BUILD HEAP FOR DYNAMIC ARRAYS.
Heap sort is a comparison-based sorting technique based on Binary Heap data structure. It is similar to the selection sort where we first find the minimum element and place the minimum element at the beginning. Repeat the same process for the remaining elements.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
6th International Conference on Machine Learning & Applications (CMLA 2024)ClaraZara1
6th International Conference on Machine Learning & Applications (CMLA 2024) will provide an excellent international forum for sharing knowledge and results in theory, methodology and applications of on Machine Learning & Applications.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
NO1 Uk best vashikaran specialist in delhi vashikaran baba near me online vas...Amil Baba Dawood bangali
Contact with Dawood Bhai Just call on +92322-6382012 and we'll help you. We'll solve all your problems within 12 to 24 hours and with 101% guarantee and with astrology systematic. If you want to take any personal or professional advice then also you can call us on +92322-6382012 , ONLINE LOVE PROBLEM & Other all types of Daily Life Problem's.Then CALL or WHATSAPP us on +92322-6382012 and Get all these problems solutions here by Amil Baba DAWOOD BANGALI
#vashikaranspecialist #astrologer #palmistry #amliyaat #taweez #manpasandshadi #horoscope #spiritual #lovelife #lovespell #marriagespell#aamilbabainpakistan #amilbabainkarachi #powerfullblackmagicspell #kalajadumantarspecialist #realamilbaba #AmilbabainPakistan #astrologerincanada #astrologerindubai #lovespellsmaster #kalajaduspecialist #lovespellsthatwork #aamilbabainlahore#blackmagicformarriage #aamilbaba #kalajadu #kalailam #taweez #wazifaexpert #jadumantar #vashikaranspecialist #astrologer #palmistry #amliyaat #taweez #manpasandshadi #horoscope #spiritual #lovelife #lovespell #marriagespell#aamilbabainpakistan #amilbabainkarachi #powerfullblackmagicspell #kalajadumantarspecialist #realamilbaba #AmilbabainPakistan #astrologerincanada #astrologerindubai #lovespellsmaster #kalajaduspecialist #lovespellsthatwork #aamilbabainlahore #blackmagicforlove #blackmagicformarriage #aamilbaba #kalajadu #kalailam #taweez #wazifaexpert #jadumantar #vashikaranspecialist #astrologer #palmistry #amliyaat #taweez #manpasandshadi #horoscope #spiritual #lovelife #lovespell #marriagespell#aamilbabainpakistan #amilbabainkarachi #powerfullblackmagicspell #kalajadumantarspecialist #realamilbaba #AmilbabainPakistan #astrologerincanada #astrologerindubai #lovespellsmaster #kalajaduspecialist #lovespellsthatwork #aamilbabainlahore #Amilbabainuk #amilbabainspain #amilbabaindubai #Amilbabainnorway #amilbabainkrachi #amilbabainlahore #amilbabaingujranwalan #amilbabainislamabad
CW RADAR, FMCW RADAR, FMCW ALTIMETER, AND THEIR PARAMETERSveerababupersonal22
It consists of cw radar and fmcw radar ,range measurement,if amplifier and fmcw altimeterThe CW radar operates using continuous wave transmission, while the FMCW radar employs frequency-modulated continuous wave technology. Range measurement is a crucial aspect of radar systems, providing information about the distance to a target. The IF amplifier plays a key role in signal processing, amplifying intermediate frequency signals for further analysis. The FMCW altimeter utilizes frequency-modulated continuous wave technology to accurately measure altitude above a reference point.
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
1. 1
Work Systems and How They Work
Chapters:
2. Manual Work and Worker-Machine Systems
3. Work Flow and Batch Processing
4. Manual Assembly Lines
5. Logistics Operations
6. Service Operations and Office Work
7. Projects and Project Management
Part I
2. 2
Manual Work & Worker-Machine
Systems
Sections:
1. Manual Work Systems
2. Worker-Machine Systems
3. Automated Work Systems
4. Determining Worker and Machine
Requirements
5. Machine Clusters
Chapter 2
3. 3
Three Categories of Work Systems
1. Manual work system
Worker performs one or more tasks without the aid
of powered tools (e.g. hammers, screwdrivers,
shovels)
2. Worker-machine system
Human worker operates powered equipment (e.g.
a machine tool)
Physical effort (less)
Machine power(more)
3. Automated work system
Process performed without the direct participation
of a human worker
7. 7
Some Definitions
Work unit – the object that is processed by the work system
Workpiece being machined (production work)
Material being moved (logistics work)
Customer in a store (service work)
Product being designed (knowledge work)
8. 8
Manual Work Systems
Most basic form of work in which human body
is used to accomplish some physical task
without an external source of power
With or without hand tools
Even if hand tools are used, the power to operate
them is derived from the strength and stamina القدرة
التحمل علىof a human worker
Hairbrush vs hair dryer
Of course other human faculties بشرية قدراتare
also required, such as hand-eye coordination
and mental effort
9. 9
Pure Manual Work
Involves only the physical and mental
capabilities of the human worker without
machines or tools.
Material handler moving cartons in a
warehouse
Workers loading furniture into a moving van
without the use of dollies
Office worker filing documents
Assembly worker snap-fitting two parts
together
10. 10
Manual Work with Hand Tools
Manual tasks are commonly augmented by
تعزز
ب use of hand tools.
Tool is a device for making changes to objects
(formally work units) such as cutting, grinding,
striking, squeezing
Scissor, screwdriver, shovel
Tools can also be used for measurement
and/or analysis purposes
Workholder to grasp or poisiton work units
11. 11
Manual Work with Hand Tools
Examples:
Machinist filing a part
Assembly worker using screwdriver
Painter using paintbrush to paint door trim
QC inspector using micrometer to measure the
diameter of a shaft
Material handling worker using a dolly to move
furniture
Office worker writing with a pen
12. 12
Repetitive vs. Nonrepetitive Tasks
Nonrepetitive Task
Repetitive Task
•Work cycle takes a long time
•Work cycles are not similar
•Work cycle is relatively short
(usually a few minutes or less)
•High degree of similarity from
one cycle to the next
In either case, the task can be divided into work elements that
consist of logical groupings of motions
13. 13
Cycle Time Analysis
Cycle time Tc
where
Tek = time of work element k, where k is used to
identify the work elements (min)
ne = number of work elements into which a cycle is
divided.
1
e
n
c ek
k
T T
14. 14
Example 2.1: A repetitive Manual Task
Current method: An assembly worker performs a
repetitive task consisting of inserting 8 pegs أوتادinto 8
holes in a board. A slightly interference fit is involved in
each insertion. The worker holds the board in one hand
and picks up the pegs from a tray with other hand and
inserts them into the holes, one peg at a time.
15. 15
Current method and current layout:
Example 2.1: A repetitive Manual Task
16. 16
Improved method and improved layout:
Use a work-holding device to hold and position the
board while the worker uses both hands
simultaneously to insert pegs.
Instead of picking one peg at a time, each hand will
grab أمسك
ب four pegs to minimize the number of
times the worker’s hands must reach the trays.
Example 2.1: A repetitive Manual Task
17. 17
Improved method
The cycle time is reduced from 0.62 min to 0.37 min.
% cycle time reduction=(CTcurrent-CTimproved)/CTcurrent
=(0.62-0.37)/0.62=40%
Example 2.1: A repetitive Manual Task
18. 18
Production ratecurrent=1/0.62 min=1.61 units per min
(throughput)
Production rateimproved=1/0.37 min=2.70 units per min
% increase in R =(Rimproved-Rcurrent)/Rcurrent
=(1.61-2.70)/1.61=68%
It is important to design the work cycle so as to minimize
the time required to perform it.
Of course there are many alterantive ways to perform a
given task. Our focus is on the best one.
Example 2.1: A repetitive Manual Task
19. 19
One Best Method Principle
Of all the possible methods that can be used to perform a
given task, there is one optimal method that minimizes the
time and effort required to accomplish it
Attributed to Frank Gilbreth
A primary objective in work design is to determine the one
best method for a task, and then to standardize it
This one best refers to an average worker with a moderate
level of skill, operating under normal working conditions with
nominal material quality and tool/equipment availability
20. 20
Cycle Time Variations
Once the method has been standardized, the
actual time to perform the task is a variable
because of:
Differences in worker performance
Mistakes, failures and errors
Variations in starting work units
Variations in hand and body motions
Extra elements not performed every cycle
Differences among workers
The learning curve phenomenon
21. 21
Worker Performance
Defined as the pace (tempo) or relative speed
with which the worker does the task.
هى
الوتيرة
(
اإليقاع
)
،
أو
السرعة
النسبية
التي
يؤدى
بها
العامل
المهمة
.
As worker performance increases, cycle time
decreases
From the employer’s viewpoint وجهة
نظر
صاحب
العمل ,
it is desirable for worker performance to be high
What is a reasonable performance/pace to
expect from a worker in accomplishing a given
task?
22. 22
Normal Performance (pace)
العادي األداء
A pace of working that can be maintained by a properly
trained average worker throughout an entire work shift
without harmful short-term or long-term effects on the
worker’s health or physical well-being
The work shift is usually 8 hours, during which periodic rest
breaks are allowed
Normal performance = 100% performance
Faster pace > 100%, slower pace < 100%
Common benchmark of normal performance:
Walking at 3 mi/hr (~4.83 km/hr)
23. 23
Normal Time
The time to complete a task when working at
normal performance (Tn )
Actual time to perform the cycle depends on
worker performance
Tc = Tn / Pw
where
Tc = cycle time,
Tn = normal time,
Pw = worker performance or pace
24. 24
Example 2.2: Normal Performance
Given: A man walks in the early morning for
health and fitness. His usual route is 1.85 miles.
The benchmark of normal performance = 3 mi/hr.
Determine:
(a) how long the route would take at normal
performance
)b( the man’s performance when he completes
the route in 30 min.
25. 25
Example 2.2: Solution
(a) At 3 mi/hr, normal time = 1.85 mi / 3 mi/hr
= 0.6167 hr = 37 min
(b) Rearranging equation, Pw = Tn / Tc
Pw = 37 min / 30 min = 1.233 = 123.3 %
If worker performance > 100%, then the time required to
complete the cycle will be less than normal time.
If worker performance < 100%, then the time required to
complete the cycle will be greater than normal time.
26. 26
Standard Performance
Same as normal performance, but
acknowledges يقر that periodic rest breaks
must be taken by the worker
Periodic rest breaks are allowed during the
work shift
Lunch breaks (1/2 or 1 hour)
usually not counted as part of work shifts
Shorter rest beraks (15 mins)
usually counted as part of work shifts
27. 27
Rest Breaks in a Work Shift
A typical work shift is 8 hours (8:00 A.M. to 5:00 P.M.
with one hour lunch break)
In Turkey work time is defined as 45 hours a week
(so 8:00 A.M. to 6:00 P.M. with one hour lunch break,
provided that workers work for 5 days)
The shift usually includes one rest break in the morning
and another in the afternoon.
The employers allows these breaks, because they know
that the overall productivity of a worker is higher if rest
breaks are allowed.
In Turkey the rest periods are not included in daily work
hours in which employers are paid for.
28. 28
Standard Performance
Of course other interruptions and delays also
occur during the shift
Machine breakdowns
Receiving instructions from the foreman
Telephone calls
Bathroom/toilette breaks etc.
29. 29
Personal time, Fatigue, Delay (PFD)
Allowance
To account for the delays and rest breaks, an
allowance is added to the normal time in order
to determine allowed time for the worker to
perform the task throughout a shift
Personal time (P)
Bathroom breaks, personal phone calls
Fatigue (F) تعب
Rest breaks are intended to deal with fatigue
Delays (D)
Interruptions, equipment breakdowns
30. 30
Standard Time
Defined as the normal time but with an allowance added
into account for losses due to personal time, fatigue, and
delays
Tstd = Tn (1 + Apfd)
where
Tstd = standard time,
Tn = normal time,
Apfd = PFD allowance factor
Also called the allowed time
Now we are confident to say that a worker working at
100% performance during 8 hours can accomplish a task
of 8 hour standard time.
31. 31
Irregular Work Elements
Elements that are performed with a frequency
of less than once per cycle
Examples:
Changing a tool
Exchanging parts when containers become full
Irregular elements are prorated into the regular
cycle according to their frequency
32. 32
Example 2.3: Determining Standard Time
and Standard Output
Given: The normal time to perform the regular
work cycle is 3.23 min. In addition, an irregular
work element with a normal time = 1.25 min is
performed every 5 cycles. The PFD allowance
factor is 15%.
Determine
(a) the standard time
(b) the number of work units produced during
an 8-hr shift if the worker's pace is consistent
with بما
يتفق
مع standard performance.
33. 33
Example 2.3: Solution
Normal time of a task involves normal times
for regular and irregular work elements
(a) Normal time Tn = 3.23 + 1.25/5
= 3.48 min
Standard time Tstd = 3.48 (1 + 0.15)
= 4.00 min
(b) Number of work units produced during an 8-hr
shift
Qstd = Hsh / Tstd
Qstd = 8.0(60)/4.00 = 120 work units
Hsh =number of shift hours, hr
34. 34
Example 2.4: Determining Lost Time due
to the Allowance Factor
Given: An allowance factor of 15% is used.
Determine the anticipated amount of time lost per
8-hour shift.
Solution:
Hsh =(Actual time worked) (1+ Apfd )
8.0 hour =(actual time worked) (1+0.15)
Actual time worked = 8 / 1.15 = 6.956 hr
Time lost = Hsh – Actual time worked
Time lost = 8.0 – 6.956 = 1.044 hr
35. 35
Example 2.5: Production rate when
worker performance exceeds 100%
Given: From Ex. 2.3,Tstd = 4.00 min and Tn = 3.48
min. The worker’s average performance during an
8-hour shift is 125% and the hours actually worked
is 6.956 hr (which corresponds to the 15%
allowance factor).
Determine daily production rate.
36. 36
Example 2.5: Solution
Based on normal time Tn = 3.48 min, the actual
cycle time with a worker performance of 125%,
Tc =3.48 / 1.25 = 2.78 min. (see slide 23)
Assuming one work unit is produced each cycle,
the corresponding daily production rate,
Rp = 6.956 (60) / 2.78 =150 work units
OR
125% of 120 units (we know that from Ex. 2.3.b)
at 100% performance = 150 units
37. 37
Standard Hours and Worker
Efficiency
Two (three) common measures of worker productivity
used in industry
1. Standard hours – represents the amount of work actually
accomplished during a given period (shift, week)
2. Quantity of work units (in terms of time) produced
Hstd = Q Tstd
where
Hstd =standard hours accomplished, hr
Q = quantity of work units completed during the period, pc
Tstd =standard time per work unit, hr/pc
3. Worker efficiency – work accomplished during the shift
expressed as a proportion of shift hours
Ew = Hstd / Hsh
Ew =worker efficiency, %
Hsh =number of shift hours, hr
38. 38
Example 2.6: Standard hours and worker
efficiency
Given: The worker performance of 125% in the
previous example. Example 2.5
Determine:
(a) number of standard hours produced
(b) worker efficiency
Solution:
(a) Hstd = Q Tstd
Hstd =150 (4 min)=600 min= 10.0 hr
(b) Ew = Hstd / Hsh
Ew = 10hr / 8 hr =125 %
39. 40
Example 2.7: Standard hours and worker
efficiency as affected by hours actually worked
Given: The worker performance of 125%, actual hours
worked is 7.42 hr. Tc = 2.78 min and Tstd =4 min
Determine:
(a) number of pieces produced,
(b) number of standard hours accomplished,
(c) the worker’s efficiency
Solution:
(a) Q =Actual time worked / cycle time
Q =7.42 (60) / 2.78 = 160 units
(b) Hstd = Q Tstd =160 (4 min) = 640 min = 10.67 hr
(c) Ew = 10.67hr / 8 hr =133.3 %